Preview Extract

Business Statistics (Donnelly)
Chapter 2 Displaying Descriptive Statistics
1) A frequency distribution is a table that shows the number of data observations that
fall into specific intervals.
Answer: TRUE
Diff: 1
Keywords: frequency distribution
Objective: 2.2.1
2) Continuous data are values based on observations that can be counted and are typically
represented by whole numbers.
Answer: FALSE
Diff: 1
Keywords: discrete data
Objective: 2.2.1
3) Continuous data is often the result of measuring observations rather than counting
them.
Answer: TRUE
Diff: 1
Keywords: continuous data
Objective: 2.2.1
4) Discrete data can have an infinite number of values within a specific interval.
Answer: FALSE
Diff: 2
Keywords: discrete data
Objective: 2.2.1
5) The only limitation in the number of continuous values within an interval is the level of
precision of the measuring instrument.
Answer: TRUE
Diff: 1
Keywords: continuous data
Objective: 2.2.1
6) The sum of the relative frequencies for the relative frequency distribution should be equal to
or very close to 1.0 due to rounding.
Answer: TRUE
Diff: 1
Keywords: relative frequency distributions
Objective: 2.2.1
2-1
Copyright ยฉ 2020 Pearson Education, Inc.
2-2 Chapter 2
7) The sum of the cumulative relative frequencies for the cumulative relative frequency
distribution should be equal to or very close to 1.0 due to rounding.
Answer: FALSE
Diff: 2
Keywords: cumulative relative frequency distributions
Objective: 2.2.1
8) A symmetrical distribution is one in which the right side of the distribution looks like the
mirror image of the left side of the distribution.
Answer: TRUE
Diff: 1
Keywords: symmetrical distributions
Objective: 2.2.1
9) The goal of constructing a frequency distribution is to identify a useful pattern in the data and
often there is more than one acceptable way to accomplish this with grouped quantitative data.
Answer: TRUE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
10) When creating a frequency distribution with grouped qualitative data and 45 data points, five
classes should be set up using the 2k > n rule.
Answer: FALSE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
11) When constructing a frequency distribution with grouped qualitative data, occasionally you
will end up with k + 1 or k โ 1 classes to cover the entire data set.
Answer: TRUE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
12) Fifty employees at CSC Corporation responded to a survey asking for the number of minutes
they commute to work in the morning. Eighteen employees indicated that their commutes are 15
to less than 20 minutes. The relative frequency for this class in a frequency distribution would be
0.18.
Answer: FALSE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-3
13) Fifty employees at CSC Corporation responded to a survey asking for the number of minutes
they commute to work in the morning. Management would like to know the proportion of
employees whose commute is less than 30 minutes. A cumulative relative frequency distribution
using grouped data would provide the information to answer this question.
Answer: TRUE
Diff: 1
Keywords: cumulative relative frequency distributions
Objective: 2.2.1
14) A fast food restaurant would like to examine the wait time for customers who use the drivethru window. The following class boundaries are appropriate to construct a frequency
distribution for this data.
Number of Minutes
0-2
2-4
4-6
6-8
Answer: FALSE
Diff: 2
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
15) Equal-size classes refer to classes for a frequency distribution using grouped quantitative
data that do not overlap.
Answer: FALSE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
16) Empty classes for a frequency distribution using grouped quantitative data result from class
widths that are too wide.
Answer: FALSE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
17) If the class sizes are not equal for a frequency distribution using grouped quantitative data,
patterns in the distribution could be misleading.
Answer: TRUE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-4 Chapter 2
18) Under no circumstances should open-ended classes be used for a frequency distribution
using grouped quantitative data.
Answer: FALSE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
19) The estimated class width for a frequency distribution using grouped quantitative data should
be rounded to an integer value to make the class boundaries more readable.
Answer: TRUE
Diff: 1
Keywords: frequency distribution, grouped quantitative data
Objective: 2.2.1
20) Histograms displaying continuous data have gaps between their bars.
Answer: FALSE
Diff: 1
Keywords: histograms, continuous data
Objective: 2.2.2
21) Histograms displaying discrete data usually have gaps between their bars.
Answer: TRUE
Diff: 1
Keywords: histograms, continuous data
Objective: 2.2.2
22) Income and age are examples of data that are technically discrete but are normally displayed
in a continuous format.
Answer: TRUE
Diff: 1
Keywords: discrete data, continuous data
Objective: 2.2.2
23) The ogive is a line graph that plots the cumulative relative frequency distribution.
Answer: TRUE
Diff: 1
Keywords: ogive
Objective: 2.2.2
24) Quantitative data are values that are categorical, describing a characteristic such as gender or
level of education.
Answer: FALSE
Diff: 1
Keywords: qualitative data
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-5
25) A histogram is the appropriate type of graph to display both quantitative and qualitative data.
Answer: FALSE
Diff: 1
Keywords: qualitative data
Objective: 2.3.1
26) Bar charts can display data either horizontally or vertically.
Answer: TRUE
Diff: 1
Keywords: bar charts
Objective: 2.3.1
27) Clustered bar charts are preferred over stacked bar charts when you are comparing data
within categories, such as which team scored more points in 2018 when compared to 2019.
Answer: TRUE
Diff: 1
Keywords: clustered bar charts
Objective: 2.3.1
28) Clustered bar charts are preferred over stacked bar charts when you are displaying totals in
each category, such as what team scored the most points over the two-year period.
Answer: FALSE
Diff: 1
Keywords: stacked bar charts
Objective: 2.3.1
29) Pareto charts are a specific type of bar chart used in quality control programs by businesses
to graphically display the causes of problems.
Answer: TRUE
Diff: 1
Keywords: Pareto charts
Objective: 2.3.1
30) Pareto charts display the categories in an increasing order with the least problematic
categories shown first.
Answer: FALSE
Diff: 2
Keywords: Pareto charts
Objective: 2.3.1
31) Pie charts are an excellent tool for comparing proportions for qualitative (categorical) data.
Answer: TRUE
Diff: 1
Keywords: pie charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-6 Chapter 2
32) Each category of a pie chart occupies a segment of the pie that represents the cumulative
relative frequency of that category.
Answer: FALSE
Diff: 1
Keywords: pie charts
Objective: 2.3.1
33) When constructing a pie chart, all categories in the data set must be included in the pie.
Answer: TRUE
Diff: 1
Keywords: pie charts
Objective: 2.3.1
34) Choose a pie chart rather than a bar chart if you want to compare the relative sizes of the
classes to one another and together they comprise all possible categories.
Answer: TRUE
Diff: 1
Keywords: pie charts
Objective: 2.3.1
35) Choose a pie chart rather than a bar chart if you want to highlight the actual data values and
when the classes combined don’t form a whole.
Answer: FALSE
Diff: 1
Keywords: pie charts
Objective: 2.3.1
36) Contingency tables help us identify relationships between two or more variables.
Answer: TRUE
Diff: 1
Keywords: contingency tables
Objective: 2.4.1
37) The stem and leaf display is a graphical technique that can used to display qualitative data.
Answer: FALSE
Diff: 1
Keywords: stem and leaf display
Objective: 2.5.1
38) A stem and leaf display allows you to observe individual data values while a histogram
groups data values together.
Answer: TRUE
Diff: 1
Keywords: stem and leaf display
Objective: 2.5.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-7
39) The dependent variable on scatter plots is placed on the horizontal axis on the graph.
Answer: FALSE
Diff: 2
Keywords: scatter plot, independent variable
Objective: 2.6.1
40) The independent variable on scatter plots is placed on the vertical axis on the graph.
Answer: FALSE
Diff: 2
Keywords: scatter plot, independent variable
Objective: 2.6.1
41) The dependent variable in a scatter plot is influenced by changes in the independent variable.
Answer: TRUE
Diff: 2
Keywords: scatter plot, independent variable, dependent variable
Objective: 2.6.1
42) A data set is known as a times series when each data point is associated with a specific point
in time.
Answer: TRUE
Diff: 1
Keywords: time series
Objective: 2.6.1
43) When graphing a time series, the convention is to place the time data on the vertical axis of
the graph.
Answer: FALSE
Diff: 2
Keywords: time series
Objective: 2.6.1
44) A ________ is a table that shows the number of data observations that fall into
specific intervals.
A) histogram
B) frequency distribution
C) ogive
D) Pareto chart
Answer: B
Diff: 1
Keywords: frequency distribution
Objective: 2.EOC.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-8 Chapter 2
45) ________ data are values based on observations that can be counted and are typically
represented by whole numbers.
A) Discrete
B) Continuous
C) Nominal
D) Time series
Answer: A
Diff: 1
Keywords: frequency distribution
Objective: 2.2.1
46) ________ are values that can take on any real numbers, including numbers that
contain decimal points. This data is often the result of measuring observations rather
than counting them.
A) Discrete
B) Cross-sectional
C) Ordinal
D) Continuous
Answer: D
Diff: 1
Keywords: continuous data
Objective: 2.2.1
47) A(n) ________ is a category in a frequency distribution.
A) line chart
B) ogive
C) class
D) histogram
Answer: C
Diff: 1
Keywords: class
Objective: 2.2.1
48) ________ display the proportion of observations of each class relative to the total
number of observations.
A) Frequency distributions
B) Cumulative relative frequency distributions
C) Relative frequency distributions
D) Histograms
Answer: C
Diff: 1
Keywords: relative frequency distributions
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-9
49) ________ totals the proportion of observations that are less than or equal to the
class at which you are looking.
A) Frequency distributions
B) Cumulative relative frequency distributions
C) Relative frequency distributions
D) Histograms
Answer: B
Diff: 1
Keywords: cumulative relative frequency distributions
Objective: 2.2.1
50) A ________ is a graph showing the number of observations in each class of a frequency
distribution.
A) frequency distribution
B) ogive
C) relative frequency distribution
D) histogram
Answer: D
Diff: 1
Keywords: histogram
Objective: 2.2.2
51) A statistics professor kept attendance records and recorded the number of absent students per
class. This data is displayed in the following histogram with the frequency of each number of
absent students shown above the bars.
How many total classes do these data represent?
A) 46
B) 100
C) 129
D) 150
Answer: C
Diff: 2
Keywords: histogram
Objective: 2.2.2
Copyright ยฉ 2020 Pearson Education, Inc.
2-10 Chapter 2
52) A statistics professor kept attendance records and recorded the number of absent students per
class. This data is displayed in the following histogram with the frequency of each number of
absent students shown above the bars.
How many statistics classes had two or fewer students absent?
A) 9
B) 40
C) 42
D) 85
Answer: D
Diff: 2
Keywords: histogram
Objective: 2.2.2
53) The class ________ is the breadth, or range, of numbers we plan to put into each class of a
frequency distribution using grouped quantitative data.
A) boundary
B) frequency
C) width
D) number
Answer: C
Diff: 1
Keywords: class width, frequency distribution, grouped data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-11
54) The class ________ represent the minimum and maximum values for each class of a
frequency distribution using grouped quantitative data.
A) boundaries
B) frequencies
C) widths
D) numbers
Answer: A
Diff: 1
Keywords: class boundary, frequency distribution, grouped data
Objective: 2.2.1
55) Class ________ are the number of observations for each class of a frequency distribution
using grouped quantitative data.
A) boundaries
B) frequencies
C) widths
D) numbers
Answer: B
Diff: 1
Keywords: class frequency, frequency distribution, grouped data
Objective: 2.2.1
56) Which of the following is not a rule for constructing a frequency distribution using grouped
quantitative data?
A) Use equal-size classes.
B) Use mutually exclusive classes.
C) Avoid empty classes.
D) Avoid close-ended classes.
Answer: D
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-12 Chapter 2
57) Consider the following frequency distribution.
Number of Minutes
0 to less than 5
5 to less than 10
8 to less than 13
13 to less than 18
Frequency
6
9
14
2
Which rule for constructing a frequency distribution using grouped quantitative data has been
violated?
A) Use equal-size classes.
B) Use mutually exclusive classes.
C) Avoid empty classes.
D) No rule has been violated.
Answer: B
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
58) Consider the following frequency distribution.
Number of Minutes
0 to less than 5
5 to less than 10
10 to less than 15
15 to less than 20
Frequency
3
11
10
7
Which rule for constructing a frequency distribution using grouped quantitative data has been
violated?
A) Use equal-size classes.
B) Use mutually exclusive classes.
C) Avoid empty classes.
D) No rule has been violated.
Answer: D
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-13
59) Consider the following frequency distribution.
Number of Customers
0-2
3-5
6-10
11-15
Frequency
10
7
12
5
Which rule for constructing a frequency distribution using grouped quantitative data has been
violated?
A) Use equal-size classes.
B) Use mutually exclusive classes.
C) Avoid empty classes.
D) No rule has been violated.
Answer: A
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
60) A data set has 60 observations with a minimum value equal to 30 and a maximum value
equal to 72. The number of classes using the 2k ๏ณ n rule is
A) 5.
B) 6.
C) 7.
D) 8.
Answer: B
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
61) A data set has 60 observations with a minimum value equal to 30 and a maximum value
equal to 72. The estimated class width using the 2k > n rule to determine the number of classes is
A) 7.
B) 9.
C) 10.
D) 12.
Answer: A
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-14 Chapter 2
62) ________ classes are classes with boundaries that do not overlap.
A) Equal-size
B) Open-ended
C) Mutually exclusive
D) Close-ended
Answer: C
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
63) The following frequency distribution displays the daily sales of muffins at Avalon Bakery.
Number Sold
1-7
8-14
15-21
20-28
27-35
Frequency
5
8
13
21
3
What is the width of each class in this distribution?
A) 1
B) 7
C) 10
D) 35
Answer: B
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.EOC.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-15
64) The following frequency distribution displays the daily sales of muffins at Avalon Bakery.
Number Sold
1-7
8-14
15-21
20-28
27-35
Frequency
5
8
13
21
3
How many days of data are included in this frequency distribution?
A) 25
B) 50
C) 75
D) 100
Answer: B
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
65) The following frequency distribution displays the daily sales of muffins at Avalon Bakery.
Number Sold
1-7
8-14
15-21
20-28
27-35
Frequency
5
8
13
21
3
What is the probability that between 15 to 21 muffins will be sold tomorrow?
A) 0.26
B) 0.36
C) 0.44
D) 0.50
Answer: A
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-16 Chapter 2
66) The following frequency distribution displays the daily sales of muffins at Avalon Bakery.
Number Sold
1-7
8-14
15-21
20-28
27-35
Frequency
5
8
13
21
3
What is the probability that 21 or fewer muffins will be sold tomorrow?
A) 0.52
B) 0.66
C) 0.80
D) 0.92
Answer: A
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
67) The following frequency distribution displays the daily sales of muffins at Avalon Bakery.
Number Sold
1-7
8-14
15-21
20-28
27-35
Frequency
5
8
13
21
3
What is the probability that between 20 and 35 muffins will be sold tomorrow?
A) 0.14
B) 0.48
C) 0.58
D) 0.66
Answer: B
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-17
68) The following distribution shows the frequency of daily revenue for an Italian restaurant in
Wilmington, Delaware.
Revenue
Under $2,000
$2,000 to under $4,000
$4,000 to under $6,000
$6,000 to under $8,000
$8,000 to under $10,000
Over $10,000
Frequency
18
10
26
14
8
4
What is the width of each class for this distribution?
A) $10,000
B) $8,000
C) $5,000
D) $2,000
Answer: D
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
69) The following distribution shows the frequency of daily revenue for an Italian restaurant in
Wilmington, Delaware.
Revenue
Under $2,000
$2,000 to under $4,000
$4,000 to under $6,000
$6,000 to under $8,000
$8,000 to under $10,000
Over $10,000
Frequency
18
10
26
14
8
4
How many business days does this frequency distribution represent?
A) 100
B) 80
C) 32
D) 18
Answer: B
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-18 Chapter 2
70) The following distribution shows the frequency of daily revenue for an Italian restaurant in
Wilmington, Delaware.
Revenue
Under $2,000
$2,000 to under $4,000
$4,000 to under $6,000
$6,000 to under $8,000
$8,000 to under $10,000
Over $10,000
Frequency
18
10
26
14
8
4
What is the probability that a randomly selected day will generate between $2,000 and under
$4,000 in revenue?
A) 0.100
B) 0.125
C) 0.325
D) 0.500
Answer: B
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
71) The following distribution shows the frequency of daily revenue for an Italian restaurant in
Wilmington, Delaware.
Revenue
Under $2,000
$2,000 to under $4,000
$4,000 to under $6,000
$6,000 to under $8,000
$8,000 to under $10,000
Over $10,000
Frequency
18
10
26
14
8
4
What is the probability that a randomly selected day will generate under $2,000 in revenue?
A) 0.050
B) 0.160
C) 0.225
D) 0.500
Answer: C
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-19
72) The following distribution shows the frequency of daily revenue for an Italian restaurant in
Wilmington, Delaware.
Revenue
Under $2,000
$2,000 to under $4,000
$4,000 to under $6,000
$6,000 to under $8,000
$8,000 to under $10,000
Over $10,000
Frequency
18
10
26
14
8
4
What is the probability that a randomly selected day will generate more than $6,000 in revenue?
A) 0.325
B) 0.650
C) 0.775
D) 0.900
Answer: A
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
73) Bins in Excel represent the ______________.
A) lower boundary of each class in a frequency distribution
B) upper boundary of each class in a frequency distribution
C) width of each class in a frequency distribution
D) number of classes in a frequency distribution
Answer: B
Diff: 1
Keywords: frequency distribution, grouped data, bins
Objective: 2.2.1
74) When you want to represent a cumulative distribution with a graph, a ________ is your best
choice.
A) frequency distribution
B) histogram
C) ogive
D) relative frequency distribution
Answer: C
Diff: 1
Keywords: ogive
Objective: 2.2.2
Copyright ยฉ 2020 Pearson Education, Inc.
2-20 Chapter 2
75) The ________ graphs the midpoint of each class or bin as a line rather than a column.
A) bar chart
B) histogram
C) scatter plot
D) ogive
Answer: D
Diff: 1
Keywords: ogive
Objective: 2.2.2
76) The ________ is a line graph that plots the cumulative relative frequency distribution.
A) ogive
B) histogram
C) scatter plot
D) pie chart
Answer: A
Diff: 1
Keywords: ogive
Objective: 2.2.2
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-21
77) The following histogram and ogive show the battery life, in hours, for a sample of iPad Air
batteries. Based on this graph, which of the following statements is true?
A) Approximately 20% of the iPad Air batteries lasted less than 12.9 hours.
B) Approximately 100% of the iPad Air batteries lasted 0.9 hours or less.
C) Approximately 80% of the iPad Air batteries lasted 12.9 hours or less.
D) Approximately 90% of the iPad Air batteries lasted more than 10.9 hours.
Answer: C
Diff: 2
Keywords: ogive
Objective: 2.2.2
Copyright ยฉ 2020 Pearson Education, Inc.
2-22 Chapter 2
78) The following ogives show the battery life, in hours, for a sample of iPad Air and 12.9-in
iPad Pro batteries. The square markers represent the iPad Air battery life while the diamond
markers represent the 12.9-in iPad Pro battery life. Based on this graph, which of the following
statements is true?
A) The battery life of the 12.9-in iPad Pro tends to be slightly longer than the battery life of the
iPad Air.
B) The battery life of the 12.9-in iPad Pro tends to be the same as the battery life of the iPad Air.
C) The difference in battery life between the iPad Air and 12.9-in iPad Pro cannot be detected
with this graph.
D) The battery life of the iPad Air tends to be slightly longer than the battery life of the 12.9-in
iPad Pro.
Answer: D
Diff: 2
Keywords: ogive
Objective: 2.2.2
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-23
79) The following chart shows the percentage of adults from various countries who admitted to
texting while driving in a recent survey.
This chart is an example of a _________ bar chart.
A) horizontal
B) stacked
C) clustered
D) vertical
Answer: D
Diff: 1
Keywords: vertical bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-24 Chapter 2
80) The following chart shows the percentage of adults from various countries who admitted to
texting while driving in a recent survey.
Which of the following statements is not correct?
A) The United States has the highest percentage of adults who admitted to texting while driving.
B) The United Kingdom has a higher percentage of adults who admit to texting while driving
when compared to Germany.
C) Spain has the lowest percentage of adults who admitted to texting while driving.
D) The United Kingdom has a lower percentage of adults who admit to texting while driving
when compared to France.
Answer: B
Diff: 1
Keywords: vertical bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-25
81) The following chart shows the average movie ticket price according to a survey by the
National Association of Theater Owners.
This chart is an example of a _________ chart.
A) horizontal bar
B) vertical bar
C) stacked bar
D) Pareto
Answer: B
Diff: 1
Keywords: vertical bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-26 Chapter 2
82) The following chart shows the average movie ticket price according to a survey by the
National Association of Theater Owners.
Which of the following statements is not correct?
A) The average ticket price has decreased over time.
B) The lowest average ticket price occurred in 2014.
C) The highest average ticket price occurred in 2018.
D) The average ticket price in 2018 was higher than the average ticket price in 2016.
Answer: A
Diff: 1
Keywords: vertical bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-27
83) The following chart shows the average market price for five brands of cars in April 2019.
This chart is an example of a __________ bar chart.
A) horizontal
B) stacked
C) clustered
D) vertical
Answer: A
Diff: 1
Keywords: horizontal bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-28 Chapter 2
84) The following chart shows the average market price for five brands of cars in April 2019.
Which of the following statements is not correct?
A) The Nissan Versa has the lowest average market value.
B) The Kia Rio has a lower average market price than the Ford Fiesta.
C) The Hyundai Accent has a lower average market price than the Toyota Yaris.
D) The Hyundai Accent has a lower average market price than the Nissan Versa.
Answer: D
Diff: 1
Keywords: horizontal bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-29
85) The following chart shows the average market price for five brands of cars in April 2019.
This chart is an example of a ____________ chart.
A) stacked bar
B) horizontal bar
C) Pareto
D) vertical bar
Answer: B
Diff: 1
Keywords: horizontal bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-30 Chapter 2
86) The following chart shows the hours lost in congestion (hours commuters spent in traffic
delays) as reported by 2018 Impact Rank at the six most congested cities in the U.S.
Which of the following statements is not correct?
A) Chicago commuters have the highest number of hours lost in congestion.
B) Los Angeles commuters have the lowest number of hours lost in congestion.
C) Washington commuters have a higher number of hours lost in congestion when compared to
New York commuters.
D) Seattle commuters have a lower number of hours lost in congestion when compared to Boston
commuters.
Answer: A
Diff: 1
Keywords: vertical bar charts
Objective: 2.EOC.2
87) ________ group several values side by side within the same category in a vertical direction.
A) Stacked bar charts
B) Clustered bar charts
C) Pie charts
D) Scatter plots
Answer: B
Diff: 1
Keywords: clustered bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-31
88) ________ group several values in a single column within the same category in a vertical
direction.
A) Stacked bar charts
B) Clustered bar charts
C) Pie charts
D) Scatter plots
Answer: A
Diff: 1
Keywords: stacked bar charts
Objective: 2.3.1
89) ________ charts are a specific type of bar chart used in quality control programs by
businesses to graphically display the causes of problems.
A) Stacked bar
B) Clustered bar
C) Pie
D) Pareto
Answer: D
Diff: 1
Keywords: Pareto charts
Objective: 2.3.1
90) Pareto charts also plot the cumulative relative frequency as a line on the chart. This line is
known as a(n) _________.
A) scatter plot
B) ogive
C) histogram
D) frequency distribution
Answer: B
Diff: 1
Keywords: Pareto charts, ogive
Objective: 2.3.1
91) Use a ________ chart if you want to compare the relative sizes of the classes in a frequency
distribution and together they comprise all possible categories.
A) horizontal bar
B) vertical bar
C) Pareto
D) pie
Answer: D
Diff: 1
Keywords: pie charts
Objective: 2.EOC.2
Copyright ยฉ 2020 Pearson Education, Inc.
2-32 Chapter 2
92) The following table shows the percentage of emails that are sent each day of the business
week according to an Intermedia survey.
Day
Percentage
Monday
15%
Tuesday
23%
Wednesday
22%
Thursday
21%
Friday
19%
Which of the following best displays this data?
A) horizontal bar chart
B) vertical bar chart
C) pie chart
D) histogram
Answer: C
Diff: 1
Keywords: pie charts
Objective: 2.3.1
93) The following table shows the percentage of a countryโs energy consumption according to
various sources.
Source
Percentage
Petroleum
37%
Natural Gas
25%
Coal
21%
Nuclear
9%
All renewable
8%
Which of the following best displays this data?
A) horizontal bar chart
B) vertical bar chart
C) pie chart
D) histogram
Answer: C
Diff: 1
Keywords: pie charts
Objective: 2.EOC.3
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-33
94) ________ provide a format to display observations that have more than one value associated
with them.
A) Histograms
B) Contingency tables
C) Frequency distributions
D) Pie charts
Answer: B
Diff: 1
Keywords: contingency tables
Objective: 2.3.1
95) In Excel, contingency tables are known as ______________.
A) pivot tables
B) bins
C) frequency distributions
D) bar charts
Answer: A
Diff: 1
Keywords: contingency tables
Objective: 2.4.1
96) A car dealership sells Buicks and Hondas. The following data shows the number of buyers
last month according to the brand of car they purchased as well as their age group.
Age
Under 40 years old
40 years or older
Buick
6
19
Honda
17
8
This data is an example of a _______________.
A) histogram
B) contingency table
C) relative frequency distribution
D) stem and leaf diagram
Answer: B
Diff: 1
Keywords: contingency tables
Objective: 2.4.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-34 Chapter 2
97) A car dealership sells Buicks and Hondas. The following data shows the number of buyers
last month according to the brand of car they purchased as well as their age group.
Age
Under 40 years old
40 years or older
Buick
6
19
Honda
17
8
The percentage of buyers 40 years or older and purchased a Honda is _____.
A) 12%
B) 16%
C) 34%
D) 38%
Answer: B
Diff: 1
Keywords: contingency tables
Objective: 2.4.1
98) A car dealership sells Buicks and Hondas. The following data shows the number of buyers
last month according to the brand of car they purchased as well as their age group.
Age
Under 40 years old
40 years or older
Buick
6
19
Honda
17
8
The percentage of buyers who are under 40 years old is _____.
A) 20%
B) 46%
C) 50%
D) 54%
Answer: B
Diff: 2
Keywords: contingency tables
Objective: 2.4.1
99) A car dealership sells Buicks and Hondas. The following data shows the number of buyers
last month according to the brand of car they purchased as well as their age group.
Age
Under 40 years old
40 years or older
Buick
6
19
Honda
17
8
Which one of the following statements is true based on the data?
A) There are more Buick buyers than Honda buyers.
B) Honda buyers tend to be older than Buick buyers.
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-35
C) There are fewer Buick buyers than Honda buyers.
D) Buick buyers tend to be older than Honda buyers.
Answer: D
Diff: 2
Keywords: contingency tables
Objective: 2.4.1
100) A stem and leaf display most resembles a __________.
A) histogram
B) contingency table
C) relative frequency distribution
D) pie chart
Answer: A
Diff: 1
Keywords: stem and leaf display
Objective: 2.5.1
101) Consider the following stem and leaf display.
3|11145
4|467
5|00456689
6|1336
Which data value occurs most often?
A) 1
B) 5
C) 31
D) 59
Answer: C
Diff: 1
Keywords: stem and leaf display
Objective: 2.5.1
102) Consider the following stem and leaf display.
3|11145
4|467
5|00456689
6|1336
Which of the following statements is correct?
A) There are a total of 10 data values in this data set.
B) The data value that occurs most often is 50.
Copyright ยฉ 2020 Pearson Education, Inc.
2-36 Chapter 2
C) This largest data value is 59.
D) The class 50-59 contains the most values.
Answer: D
Diff: 1
Keywords: stem and leaf display
Objective: 2.5.1
103) Consider the following stem and leaf display.
1(0) | 2 4 4
1(5) | 6 6 7 8
2(0) | 0 0 1 1 1 2 2
2(5) | 5 5 7 8
3(0) | 0 1 3 4
Which data value occurs most often?
A) 1
B) 21
C) 22
D) 200
Answer: B
Diff: 1
Keywords: stem and leaf display
Objective: 2.5.1
104) Consider the following stem and leaf display.
1(0) | 2 4 4
1(5) | 6 6 7 8
2(0) | 0 0 1 1 1 2 2
2(5) | 5 5 7 8
3(0) | 0 1 3 4
Which of the following statements is correct?
A) There are a total of 10 data values in this data set.
B) The data value that occurs most often is 22.
C) This largest data value is 34.
D) The class 15-19 contains the most values.
Answer: C
Diff: 1
Keywords: stem and leaf display
Objective: 2.5.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-37
105) ________ provide a picture of the relationship between two variables that are paired
together.
A) Scatter plots
B) Pareto charts
C) Histograms
D) Pie charts
Answer: A
Diff: 1
Keywords: scatter plots
Objective: 2.6.2
106) A _____ chart is a special type of scatter plot in which the data points in the scatter plot are
connected with a line.
A) bar
B) Pareto
C) line
D) pie
Answer: C
Diff: 1
Keywords: scatter plot, line chart
Objective: 2.6.2
107) The following graph shows the curb weight of seven cars, in pounds, along with their
corresponding highway miles per gallon.
50
45
Miles per Gallon
40
35
30
25
20
15
10
2500
2700
2900
3100
3300
3500
3700
3900
4100
Curb Weight (pounds)
Copyright ยฉ 2020 Pearson Education, Inc.
2-38 Chapter 2
This graph is an example of a _________.
A) line chart
B) scatter plot
C) Pareto chart
D) histogram
Answer: B
Diff: 1
Keywords: scatter plots
Objective: 2.6.2
108) The following graph shows the curb weight of seven cars, in pounds, along with their
corresponding highway miles per gallon.
50
45
Miles per Gallon
40
35
30
25
20
15
10
2500
2700
2900
3100
3300
3500
3700
3900
4100
Curb Weight (pounds)
Which one of the following statements is correct?
A) Curb weight is the dependent variable in the graph.
B) Miles per gallon is the independent variable in the graph.
C) As the curb weight increases, the highway miles per gallon tend to decrease.
D) As the curb weight increases, the highway miles per gallon tend to increase.
Answer: C
Diff: 1
Keywords: scatter plots
Objective: 2.6.2
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-39
109) The following graph shows the square footage of 10 homes along with their corresponding
heating cost for the most recent month.
Monthly Heating Cost
$500
$450
$400
$350
$300
$250
$200
1500
2000
2500
3000
3500
Square Footage
This graph is an example of a _____________.
A) line chart
B) horizontal bar chart
C) Pareto chart
D) scatter plot
Answer: D
Diff: 1
Keywords: scatter plots
Objective: 2.6.2
110) The following graph shows the square footage of 10 homes along with their corresponding
heating cost for the most recent month.
$500
Monthly Heating Cost
$450
$400
$350
$300
$250
$200
1500
2000
2500
3000
3500
Square Footage
Copyright ยฉ 2020 Pearson Education, Inc.
2-40 Chapter 2
Which one of the following statements is not correct?
A) Monthly heating cost is the dependent variable in the graph.
B) Square footage is the independent variable in the graph.
C) As the square footage of the home increases, the monthly heating cost tends to increase.
D) As the square footage of the home increases, the monthly heating cost tends to decrease.
Answer: D
Diff: 1
Keywords: scatter plots
Objective: 2.6.2
111) The following graph shows the average grade point average for a particular college from
2011 until 2019.
This graph is an example of a _________.
A) line chart
B) vertical bar chart
C) Pareto chart
D) histogram
Answer: A
Diff: 1
Keywords: line chart
Objective: 2.6.2
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-41
112) The following graph shows the average grade point average for a particular college from
2011 until 2019.
Which one of the following statements is correct?
A) Average GPA is the dependent variable in the graph.
B) Year is the dependent variable in the graph.
C) Historically, the Average GPA of the college tends to decrease.
D) There appears to be no relationship between Year and Average GPA.
Answer: A
Diff: 1
Keywords: line chart
Objective: 2.6.2
Copyright ยฉ 2020 Pearson Education, Inc.
2-42 Chapter 2
113) The following graph shows the average price of LCD TVs from 2009 until 2019.
This graph is an example of a ________.
A) histogram
B) vertical bar chart
C) Pareto chart
D) line chart
Answer: D
Diff: 1
Keywords: line chart
Objective: 2.6.2
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-43
114) The following graph shows the average price of LCD TVs from 2009 until 2019.
Which one of the following statements is correct?
A) Year is the dependent variable in the graph.
B) Average Price is the independent variable in the graph.
C) Historically, the average price of LCD TVs tends to increase.
D) Historically, the average price of LCD TVs tends to decrease.
Answer: D
Diff: 1
Keywords: scatter plots
Objective: 2.6.2
Copyright ยฉ 2020 Pearson Education, Inc.
2-44 Chapter 2
115) The following data shows the number of students that came to office hours per day for a
particular faculty member.
0
0
1
2
0
0
1
2
0
0
1
2
0
0
1
2
0
0
1
3
0
0
1
3
0
0
1
3
0
0
1
3
0
1
2
4
0
1
2
4
Construct a frequency distribution for this data.
Answer:
Number of Students
Frequency
0
18
1
10
2
6
3
4
4
2
Total
40
Diff: 1
Keywords: frequency distribution
Objective: 2.2.1
116) The following data shows the number of students that came to office hours per day for a
particular faculty member.
0
0
1
2
0
0
1
2
0
0
1
2
0
0
1
2
0
0
1
3
0
0
1
3
0
0
1
3
0
0
1
3
0
1
2
4
0
1
2
4
Construct a relative frequency distribution for this data and determine the probability that one
student will come to office hours today.
Answer:
Relative
Number of Students
Frequency
Frequency
0
18
0.45
1
10
0.25
2
6
0.15
3
4
0.10
4
2
0.05
Total
40
1.00
P(x = 1) = 0.25
Diff: 1
Keywords: relative frequency distributions
Objective: 2.2.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-45
117) The following data shows the number of students that came to office hours per day for a
particular faculty member.
0
0
1
2
0
0
1
2
0
0
1
2
0
0
1
2
0
0
1
3
0
0
1
3
0
0
1
3
0
0
1
3
0
1
2
4
0
1
2
4
Construct a cumulative relative frequency distribution for this data and determine the probability
that fewer than three students will come to office hours today.
Answer:
Relative
Cumulative
Frequency
Relative
Number of Students
Frequency
Frequency
0
18
0.45
0.45
1
10
0.25
0.70
2
6
0.15
0.85
3
4
0.10
0.95
4
2
0.05
1.00
Total
40
1.00
P(x 20
$840 ๏ญ $600
Estimated Class Width ๏ฝ
๏ฝ $48 ๏ป $50
5
Monthly Rent
Frequency
$600 to under $650
2
$650 to under $700
5
$700 to under $750
3
$750 to under $800
8
$800 to under $850
2
Total
20
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.1
124) The following data show the monthly rental for a random sample of one-bedroom
apartments in York, Pennsylvania.
$600 $615 $660 $660 $675 $680 $690 $700 $720 $725
$755 $760 $775 $775 $780 $780 $780 $785 $810 $840
Construct a relative frequency distribution for this data and determine the probability a randomly
selected one-bedroom apartment will rent between $700 and less than $750 per month.
Answer: Set k = 5 because 25 = 32 > 20
$840 ๏ญ $600
Estimated Class Width ๏ฝ
๏ฝ $48 ๏ป $50
5
Monthly Rent
Frequency Relative Frequency
$600 to under $650
2
0.10
$650 to under $700
5
0.25
$700 to under $750
3
0.15
$750 to under $800
8
0.40
$800 to under $850
2
0.10
Total
20
1.00
P($700 โค x 20
$840 ๏ญ $600
Estimated Class Width ๏ฝ
๏ฝ $48 ๏ป $50
5
Cumulative
Relative
Relative
Monthly Rent
Frequency Frequency Frequency
$600 to under $650
2
0.10
0.10
$650 to under $700
5
0.25
0.35
$700 to under $750
3
0.15
0.50
$750 to under $800
8
0.40
0.90
$800 to under $850
2
0.10
1.00
Total
20
1.00
P(x 20
$840 ๏ญ $600
Estimated Class Width ๏ฝ
๏ฝ $48 ๏ป $50
5
Monthly Rent
Frequency
$600 to under $650
2
$650 to under $700
5
$700 to under $750
3
$750 to under $800
8
$800 to under $850
2
Total
20
Diff: 1
Keywords: frequency distribution, grouped data
Objective: 2.2.2
Copyright ยฉ 2020 Pearson Education, Inc.
2-54 Chapter 2
127) The following table shows the number of points scored by the Green Bay Packers of the
National Football League over 15 seasons.
Green Bay
560 388
442 398
461
390
419
353
435
357
301
408
298
422
424
Use four classes, each with a class width of 100. Start classes with 201-300, 301-400, and so on,
and construct an ogive. What conclusions can you draw?
Answer:
The highest frequency of Green Bay scores per season was between 400 and 500 points
Diff: 2
Keywords: ogive
Objective: 2.2.2
128) The following table shows the number of points scored by the Green Bay Packers and the
Detroit Lions of the National Football League over 15 seasons.
Green Bay
560 388
442 398
Detroit
474 362
270 306
461
390
419
353
435
357
301
408
298
422
424
262
270
268
307
346
322
305
306
254
379
296
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-55
Use four classes, each with a class width of 100. Start classes with 201-300, 301-400, and so on,
and construct two ogives. What conclusions can you draw comparing these two teams?
Answer:
Green Bay tended to score more points per season than Detroit during this time span.
Diff: 2
Keywords: ogive
Objective: 2.2.2
Copyright ยฉ 2020 Pearson Education, Inc.
2-56 Chapter 2
129) The following table shows the number of patents that various corporations filed in 2017.
Company
IBM
Samsung
Canon
Apple
Intel
Number of Patents in 2017
9,043
5,837
3285
2229
3,023
Construct the type of chart that would be most appropriate if the goal was to compare the number
of patents among companies.
Answer:
Diff: 2
Keywords: bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-57
130) The following table shows the percentage of adults (18- to 34-year-olds) invested in the
stock market from a Gallup survey.
Year
2011
2013
2015
2017
Percentage
54%
52%
43%
37%
Construct the type of chart that would be most appropriate if the goal was to track the
percentages over time.
Answer:
Diff: 2
Keywords: line charts
Objective: 2.6.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-58 Chapter 2
131) The following table shows the average number of diners at a restaurant during each day of
the week.
Day
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Average Number of Diners
73
102
100
79
128
227
99
Construct the type of chart that would be most appropriate if the goal was to compare the number
of diners during the week.
Answer:
Diff: 2
Keywords: bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-59
132) The following table shows customer satisfaction scores for five airlines in 2017 and 2018.
Airline
JetBlue
Southwest
Alaska
United
Frontier
2017
82
80
78
70
66
2018
79
80
79
67
62
Construct the type of chart that would be most appropriate if the goal was to investigate changes
in satisfaction scores for each airline between the two years.
Answer:
Diff: 1
Keywords: clustered bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-60 Chapter 2
133) The following table shows the average roundtrip airfares for flights at Chicago O’Hare, IL
and Miami, FL for quarter one of each of three years, according to the Bureau of National
Statistics.
Year
2016
2017
2018
Chicago O’Hare, IL
Miami, FL
$338
$329
$314
$314
$341
$319
Construct the type of chart that would be most appropriate if the goal was to compare the
average roundtrip airfares at both airports.
Answer:
Diff: 2
Keywords: clustered bar charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-61
134) The following table shows the number of complaints recorded at a restaurant over the past
several years.
Complaint
Rude server
Feeling rushed
Too noisy
Poor food
Other
Frequency
42
25
15
11
7
Construct a Pareto chart to display this data.
Answer:
100%
1
0.93
90%
0.82
80%
70%
0.67
60%
Relative Frequency
50%
40%
0.42
Cumulative Relative
Frequency
30%
20%
10%
0%
Rude
server
Feeling
rushed
Too
noisy
Poor
food
Other
Diff: 2
Keywords: Pareto charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-62 Chapter 2
135) The following table shows the number of complaints recorded at a college from the student
body this past school year.
Complaint
Poor food service
Feel like a number
Lack of diversity
Other
Frequency
20
13
9
8
Construct a Pareto chart to display this data.
Answer:
100%
1
90%
0.84
80%
70%
0.66
60%
Relative Frequency
50%
40%
0.4
Cumulative Relative
Frequency
30%
20%
10%
0%
Poor food Feel like a
service
number
Lack of
diversity
Other
Diff: 2
Keywords: Pareto charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-63
136) A survey of 4,080 workers was asked when they expected to retire. The following table
shows the frequency distribution of the respondents.
Response
Before age 60
Age 60-69
Age 70 or older
Not retiring
Frequency
286
2,203
1,020
571
Construct a chart that best displays this data.
Answer:
When Do You Expect to Retire?
571
286
Before age 60
Age 60-69
1020
Age 70 or older
2203
Not retiring
Diff: 2
Keywords: pie charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-64 Chapter 2
137) A survey of 2,056 adults was asked how many books they typically read in a year. The
following table shows the frequency distribution of the respondents.
Response
None
1-2
3-5
6-10
11 or more
Frequency
288
308
390
392
678
Construct a chart that best displays this data.
Answer:
Books Read in a Year
288
None
678
308
1-2
3-5
6-10
392
390
11 or more
Diff: 2
Keywords: pie charts
Objective: 2.3.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-65
138) Costco is a warehouse store that has two types of membership โ standard and executive.
The following table shows the gender and type of membership of the last 20 customers at a
particular store.
Membership
standard
executive
standard
executive
standard
executive
standard
executive
standard
executive
Gender
male
female
female
male
male
male
male
female
male
female
Membership
standard
standard
standard
standard
standard
executive
executive
executive
executive
executive
Gender
female
male
female
male
female
female
female
male
female
female
Construct a contingency table for this data.
Answer:
Standard
Executive
Female
4
7
Male
6
3
Diff: 1
Keywords: contingency tables
Objective: 2.4.1
Copyright ยฉ 2020 Pearson Education, Inc.
2-66 Chapter 2
139) Chris is a photographer and sells two types of photography for consignment in an art store
โ landscapes and flower close-ups. She also sells each in three print sizes โ 8×10, 11×14, and
13×19 inches. The following table shows the number of prints of each type and size that have
recently sold.
Type
landscape
landscape
flower
flower
landscape
flower
flower
flower
landscape
Size
13×19
11×14
11×14
8×10
13×19
8×10
11×14
13×19
13×19
Type
flower
landscape
landscape
flower
landscape
landscape
flower
landscape
landscape
Size
11×14
11×14
8×10
8×10
11×14
13×19
11×14
11×14
13×19
Construct a contingency table for this data.
Answer:
Landscape
Flower
8×10
1
3
11×14
4
4
13×19
5
1
Diff: 1
Keywords: contingency tables
Objective: 2.4.1
140) The following data represents the high ambient temperature for a particular city over the
past 16 days.
52
69
56
73
56
73
58
74
59
76
60
76
62
77
65
78
Construct a stem and leaf display for this data.
Answer:
5|26689
6|0259
7|3346678
Diff: 1
Keywords: stem and leaf display
Objective: 2.5.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-67
141) The following data represents the satisfaction scores from customers at a hotel on a 1-100
scale.
77
87
77
89
81
90
81
92
82
92
83
92
83
93
84
93
84
96
87
97
Construct a stem and leaf display for this data, splitting the stems in half.
Answer:
7(5) | 7 7
8(0) | 1 1 2 3 3 4 4
8(5) | 7 7 9
9(0) | 0 2 2 2 3 3
9(5) | 6 7
Diff: 1
Keywords: stem and leaf display
Objective: 2.2.5
Copyright ยฉ 2020 Pearson Education, Inc.
2-68 Chapter 2
142) The following table shows the number of hours that six students studied for their statistics
exam and their corresponding exam grades.
Hours of Study
3
6
4
4
3
2
Exam Grade
86
95
92
83
78
79
Construct a scatter plot to display this data. What conclusions can be drawn?
Answer:
100
Exam Grade
95
90
85
80
75
70
0
1
2
3
4
5
6
7
Hours of Study
It appears that the students who studied longer, in general, did better on the exam.
Diff: 1
Keywords: scatter plots
Objective: 2.2.6
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-69
143) The following table shows the weekly demand for a particular digital camera and the
corresponding price of that camera during the week.
Weekly Demand
16
19
14
13
11
12
8
Price
$300
$310
$320
$330
$340
$350
$360
Construct a scatter plot to display this data. What conclusions can be drawn?
Answer:
20
Weekly Demand
18
16
14
12
10
8
6
$290
$300
$310
$320
$330
$340
$350
$360
$370
Price
It appears that as the price increases, demand for the camera decreases.
Diff: 1
Keywords: scatter plots
Objective: 2.2.6
Copyright ยฉ 2020 Pearson Education, Inc.
2-70 Chapter 2
144) The following table shows the enrollment at a private grade school from 2012 until 2019.
Year
2012
2013
2014
2015
2016
2017
2018
2019
Enrollment
424
445
459
443
430
435
441
456
Construct a line chart to display this data.
Answer:
Diff: 1
Keywords: line chart
Objective: 2.2.6
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-71
145) The following table shows the percent of car sales that were SUVs at a car dealership from
2013 until 2019.
Year
2013
2014
2015
2016
2017
2018
2019
Percent
27.3
24.2
27.2
26.5
25.9
29.0
32.4
Construct a line chart to display this data.
Answer:
Diff: 1
Keywords: line chart
Objective: 2.2.6
Copyright ยฉ 2020 Pearson Education, Inc.
2-72 Chapter 2
146) The following histogram shows the number of students that came to office hours per day for
a particular faculty member for the last 40 school days.
Which of the following statements is not correct?
A) For 18 days, no one came for office hours.
B) For 2 days, 4 students came for office hours.
C) Ten students came for student hours for one day.
D) For most of the days, zero to one student came for office hours.
Answer: C
Diff: 2
Keywords: histogram
Objective: 2.EOC.1
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-73
147) The following bar chart shows the number of patents that various corporations filed in
2017.
Which of the following statements is correct?
A) Intel filed for approximately 3,000 patents.
B) Samsung had the highest number of patents.
C) Canon had the lowest number of patents.
D) Apple had higher number of patents than Intel.
Answer: A
Diff: 1
Keywords: bar charts
Objective: 2.EOC.2
148) A survey of 4,000 workers was asked when they expected to retire. The following table
shows the frequency distribution of the respondents. What chart best displays this data and why?
Response
Frequency
Before age 60
206
Age 60-69
2,203
Age 70 or older
1,020
Not retiring
571
A) A histogram since the data is continuous.
B) A pie chart since the data is qualitative.
C) A line chart since it is a time-series data.
D) A stacked bar chart since we need to group several values in a single column.
Answer: B
Diff: 2
Keywords: pie charts, qualitative data
Objective: 2.EOC.3
Copyright ยฉ 2020 Pearson Education, Inc.
2-74 Chapter 2
149) The following table shows customer satisfaction scores for five airlines in 2018. What chart
best displays this data and why?
Airline
2018
JetBlue
79
Southwest
80
Alaska
79
United
67
Frontier
62
A) A histogram since the data is continuous.
B) A line chart since it is a time-series data.
C) A bar chart since the data is qualitative.
D) A stacked bar chart since we need to group several values in a single column.
Answer: C
Diff: 2
Keywords: line charts, qualitative data
Objective: 2.EOC.3
150) The following graph shows the curb weight of seven cars, in pounds, along with their
corresponding highway miles per gallon.
50
Miles per Gallon
45
40
35
30
25
20
15
10
2500
2700
2900
3100
3300
3500
3700
3900
4100
Curb Weight (pounds)
Which one of the following statements is correct?
A) As the curb weight increases, the highway miles per gallon tend to decrease.
B) As the curb weight decreases, the highway miles per gallon tend to decrease.
C) There is no relationship between curb weight and miles per gallon.
D) As the curb weight increases, the highway miles per gallon tend to increase.
Answer: A
Diff: 1
Keywords: scatter plots
Objective: 2.EOC.4
Copyright ยฉ 2020 Pearson Education, Inc.
Displaying Descriptive Statistics 2-75
151) The following line chart shows Disneyโs revenue (in billions) from 1998 until 2017.
Which one of the following statements is correct?
A) Disneyโs revenue has been continuously increasing.
B) Disneyโs revenue has been continuously decreasing.
C) Disneyโs highest revenue was in 2010.
D) Disneyโs revenue in 2009 was lower than 2008.
Answer: D
Diff: 1
Keywords: line chart
Objective: 2.EOC.4
Copyright ยฉ 2020 Pearson Education, Inc.
2-76 Chapter 2
152) A sample of 20 first-year students was asked if they live on-campus and if they own a car.
The following table shows the responses.
Live on Campus Own a Car Live on Campus Own a Car
Yes
No
Yes
No
No
No
Yes
No
Yes
Yes
Yes
No
Yes
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
Yes
Yes
No
Construct a contingency table for this data.
Answer:
Live on
Campus
No
Own a Car
No Yes Total
2
2
4
Yes
13
3
16
Total
15
5
20
Diff: 1
Keywords: contingency tables
Objective: 2.EOC.5
153) A sample of 20 first-year students was asked if they live on-campus and if they own a car.
The following contingency table shows the responses.
Live on
Campus
No
Own a Car
No Yes Total
2
2
4
Yes
13
3
16
Total
15
5
20
Which one of the following statements is correct?
A) 75% of students in this sample do not live on-campus.
B) 75% of students in this sample do not own a car.
C) 65% of students in this sample live on campus and own a car.
D) 10% of students in this sample live on campus and do not own a car.
Answer: B
Diff: 2
Keywords: contingency tables
Objective: 2.EOC.5
Copyright ยฉ 2020 Pearson Education, Inc.

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