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Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) The following bar graph presents the average amount a certain family spent, in dollars, on various
1)
food categories in a recent year.
On which food category was the most money spent?
A) Fruits and vegetables
B) Cereals and baked goods
C) Meat poultry, fish, eggs
D) Dairy products
2) The following pie chart presents the percentages of fish caught in each of four ratings categories.
2)
Match this pie chart with its corresponding bar graph.
1
A)
B)
C)
D)
2
3) The following pie chart presents the percentages of fish caught in each of four ratings categories.
3)
Match this pie chart with its corresponding Pareto chart.
A)
B)
3
C)
D)
4) Following is a pie chart that presents the percentages spent by a certain household on its five4)
largest annual expenditures. What percentage of the money spent was spent on food, housing, and
utilities?
A) 50%
B) 52.6%
C) 61.9%
D) 65%
5) The following frequency distribution presents the frequency of passenger vehicles that pass 5)
through a certain intersection from 8:00 AM to 9:00 AM on a particular day.
Vehicle Type
Motorcycle
Sedan
Frequency
5
75
4
SUV
Truck
70
35
Construct a frequency bar graph for the data.
A)
B)
C)
D)
5
6) The following frequency distribution presents the frequency of passenger vehicles that pass 6)
through a certain intersection from 8:00 AM to 9:00 AM on a particular day.
Vehicle Type
Motorcycle
Sedan
SUV
Truck
Frequency
15
80
88
34
What is the relative frequency of the Motorcyle category?
A) 0.17
B) 15
C) 0.069
D) 15%
7) The following frequency distribution presents the frequency of passenger vehicles that pass 7)
through a certain intersection from 8:00 AM to 9:00 AM on a particular day.
Vehicle Type
Motorcycle
Sedan
SUV
Truck
Frequency
7
63
84
30
Construct a relative frequency distribution for the data.
A)
B)
Vehicle Type
Motorcycle
Sedan
SUV
Truck
Relative Frequency
0.083
0.75
1
0.357
C)
Vehicle Type
Motorcycle
Sedan
SUV
Truck
Relative Frequency
0.038
0.342
0.457
0.163
Vehicle Type
Motorcycle
Sedan
SUV
Truck
Relative Frequency
0.07
0.63
0.84
0.3
D)
Vehicle Type
Motorcycle
Sedan
SUV
Truck
Relative Frequency
0.038%
0.342%
0.457%
0.163%
8) The following frequency distribution presents the frequency of passenger vehicles that pass 8)
through a certain intersection from 8:00 AM to 9:00 AM on a particular day.
Vehicle Type
Motorcycle
Sedan
SUV
Frequency
9
54
27
6
Truck
53
Construct a relative frequency bar graph for the data.
A)
B)
C)
D)
7
9) The following frequency distribution presents the frequency of passenger vehicles that pass 9)
through a certain intersection from 8:00 AM to 9:00 AM on a particular day.
Vehicle Type
Motorcycle
Sedan
SUV
Truck
Frequency
7
22
58
67
Construct a relative frequency Pareto chart for the data.
A)
B)
C)
8
D)
10) The following frequency distribution presents the frequency of passenger vehicles that pass 10)
through a certain intersection from 8:00 AM to 9:00 AM on a particular day.
Vehicle Type
Motorcycle
Sedan
SUV
Truck
Frequency
12
54
26
64
Construct a pie chart for the data.
A)
B)
C)
D)
9
11) Classify the histogram as skewed to the left, skewed to the right, or approximately symmetric.
11)
A) skewed to the left
B) skewed to the right
C) approximately symmetric
12) Classify the histogram as unimodal or bimodal.
A) unimodal
12)
B) bimodal
13) One hundred students are shown an eight-digit number on a piece of cardboard for three seconds
13)
and are asked to then recite the number from memory. The process is repeated until the student
accurately recites the entire number from memory. The following histogram presents the number
of trials it took each student to memorize the number.
How many students memorized the number in three trials or less?
A) 2
B) 81
C) 19
10
D) 24
14) The following frequency distribution presents the weights in pounds (lb) of a sample of visitors
14) to
a health clinic.
Weight (lb)
100-103
104-107
108-111
112-115
116-119
120-123
124-127
128-131
Frequency
2
1
4
4
10
9
4
1
What is the class width?
A) 4
B) 3
C) 32
D) 5
15) The following frequency distribution presents the weights in pounds (lb) of a sample of visitors
15) to
a health clinic.
Construct a frequency histogram.
A)
11
B)
C)
D)
12
16) The following frequency distribution presents the weights in pounds (lb) of a sample of visitors
16) to
a health clinic.
Construct a relative frequency histogram.
A)
B)
13
C)
D)
17) The following table presents the purchase totals (in dollars) of a random sample of gasoline 17)
purchases at a convenience store.
Construct a frequency distribution using a class width of 10, and using 0 as the lower class limit
for the first class.
14
A)
B)
C)
D)
18) The following table presents the purchase totals (in dollars) of a random sample of gasoline 18)
purchases at a convenience store.
Construct a relative frequency distribution using a class width of 10, and using 0 as the lower class
limit for the first class.
15
A)
B)
C)
16
D)
19) The following table presents the purchase totals (in dollars) of a random sample of gasoline 19)
purchases at a convenience store.
Construct a frequency histogram using a class width of 10, and using 0 as the lower class limit for
the first class.
A)
17
B)
C)
D)
20) The following table presents the purchase totals (in dollars) of a random sample of gasoline 20)
purchases at a convenience store.
Construct a relative frequency histogram using a class width of 10, and using 0 as the lower class
limit for the first class.
18
A)
B)
C)
19
D)
the
21) Thirty households were surveyed for the number of televisions in each home. Following are 21)
results.
Construct a frequency histogram.
A)
B)
20
C)
D)
the
22) Thirty households were surveyed for the number of televisions in each home. Following are 22)
results.
Construct a relative frequency histogram.
A)
21
B)
C)
D)
22
23) A sample of 200 high school students were asked how many hours per week they spend watching
23)
television. The following frequency distribution presents the results.
Construct a frequency polygon for the frequency distribution.
A)
B)
23
C)
D)
24) A sample of 200 high school students were asked how many hours per week they spend watching
24)
television. The following frequency distribution presents the results.
Construct a relative frequency polygon for the frequency distribution.
24
A)
B)
C)
D)
25
25) A sample of 200 high school students were asked how many hours per week they spend watching
25)
television. The following frequency distribution presents the results.
Construct a frequency ogive for the frequency distribution.
A)
B)
26
C)
D)
26) A sample of 200 high school students were asked how many hours per week they spend watching
26)
television. The following frequency distribution presents the results.
Construct a relative frequency ogive for the frequency distribution.
27
A)
B)
C)
D)
28
27) Construct a stem-and-leaf plot for the following data.
A)
B)
C)
D)
29
27)
place.
28) Construct a stem-and-leaf plot for the following data, in which the leaf represents the tenths 28)
A)
B)
C)
D)
29) Construct a dotplot for the following data.
29)
A)
30
B)
C)
D)
31
30) Construct a dotplot for the following data.
30)
A)
B)
C)
D)
31) Following are the numbers of Dean’s List students in a random sample of 20 university
courses. Construct a dotplot for these data.
32
31)
A)
B)
C)
D)
32) The following table presents the rate of population growth of a suburb of Atlanta, Georgia for
32)each
of the years 1990 through 2009. Construct a time-series plot of the growth rate.
33
A)
B)
C)
D)
34
33) The following time-series plot presents the population growth (in percent) of a suburb of
33)
Atlanta, Georgia for each of the years 1990 through 2009. Estimate the rate of growth in
1,999.
A) 4.6%
B) 5.2%
C) 4.9%
D) 5.5%
34) The following time-series plot presents the population growth (in percent) of a suburb of
34)
Atlanta, Georgia for each of the years 1990 through 2009. Estimate the amount by which
the rate of growth changed from 1,995 to 2,004.
A) about -1.3 percentage points
B) about -1.9 percentage points
C) about -1.0 percentage points
D) about -2.9 percentage points
35) The amounts 3 and 2 are compared. Which of the following graphical displays are the
least misleading?
A)
35
35)
B)
C)
D)
36) The amounts 5 and 2 are compared. Which of the following graphical displays are the
least misleading?
A)
36
36)
B)
C)
D)
37
37) The amounts 3 and 4 are compared. Which of the following graphical displays are the
least misleading?
A)
B)
C)
D)
38
37)
38) Helium prices: The cost of grade A Helium gas in 2003 was around $60/Mcf. Five years
38)
later it reached around $115/Mcf. Which of the following graphs accurately represents
the magnitude of the increase? Which one exaggerates it?
A)
B)
2003
2008
39) Gravity on Mars: The gravity on Earth is around
2
‘s stronger than the gravity on Mars.
3
Which of the following graphics compare the gravity differences more accurately, and why?
A)
B)
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
40) Chocolate or vanilla: The following bar graph shows the number of chocolate
and vanilla ice cream cones sold during the annual county fair for the years 2013
– 2017. Does the graph present an accurate picture of the difference between
chocolate and vanilla cones sold? Or is it misleading? Explain.
39
40)
39)
41) Toy sales: The following graph presents the percent market share for the US Toy
41)
Retail Sales between brick and mortar toy sales and online sales for the years
2011-2015. Does the graph present an accurate picture of the differences in
revenue from these two sources? Or is it misleading? Explain.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
42) Choose the answer below that best completes the following statement.
A ________ is a number that describes a population.
A) summary
B) statistic
C) sample
42)
D) parameter
43) Choose the answer below that best completes the following statement.
A _____________ is a number that describes a sample.
A) population
B) statistic
C) measurement
43)
D) parameter
44) In a recent poll, 64% of the respondents supported stricter gun laws. Is this an example
of statistic or a parameter?
A) Statistic
44)
B) Parameter
45) In a small town, 84% of the residents, aged 16 or more years old, own a car. Is this an
example of statistic or a parameter?
A) Statistic
45)
B) Parameter
46) Of the televisions offered at an electronics store, 42% cost less than $500.00. Is this an
example of statistic or a parameter?
A) Statistic
46)
B) Parameter
47) In a survey of 1000 teenagers, 23% of them said they use tobacco products. Is this an
example of statistic or a parameter?
A) Statistic
B) Parameter
40
47)
48) Which of the following sample types should you always regard as unreliable?
A) simple random samples
B) voluntary response samples
C) stratified samples
D) cluster samples
49) A pollster randomly samples 145 Democrats, 154 Republicans and 19 Independents (all
48)
49)
registered voters) in Metro City and asks each poll participant which mayoral candidate
he or she prefers. Identify the kind of sample that the pollster is using.
A) stratified sample
B) sample of convenience
C) voluntary response sample
D) cluster sample
50) A middle school student passes out leaflets to the adults at a school function. The leaflets
50)
ask the recipient to indicate whether they believe in anthropogenic global warming. The
bottom of the leaflet indicates that the completed leaflet should be returned to the
student. Identify the kind of sample that is being used.
A) sample of convenience
B) systematic sample
C) cluster sample
D) stratified sample
51) By visiting homes door-to-door, a municipality surveys all the households in 149
51)
randomly-selected neighborhoods to see how residents feel about a proposed property
tax increase. Identify the type of sample that is being used.
A) systematic sample
B) voluntary response sample
C) stratified sample
D) cluster sample
52) An electronics manufacturer test every 50th cell phone to verify that it is functioning
52)
properly. Identify the kind of sample that is being used.
A) simple random sample
B) systematic sample
C) cluster sample
D) stratified sample
53) The names of all 126 students in a professor’s class are written on identical slips of
53)
paper, and the slips are placed into a large glass jar. Then, the professor selects 14
random slips from the jar. Identify the kind of sample that is being used.
A) systematic sample
B) simple random sample
C) cluster sample
D) sample of convenience
54) Determine which of the following describes quantitative data.
i). the name of a chemical sample
ii). the mass of a chemical sample
iii). the color of a chemical sample
A) ii only
B) i and ii only
C) i, ii, and iii
41
54)
D) i only
55) Determine which of the following describes quantitative data.
i). the length of an object in feet
ii). the speed of an object in meters per second
iii). the number of objects that are blue
A) i and ii only
B) iii only
C) i only
55)
D) i, ii, and iii
56) Determine which of the following describes qualitative data.
i). the volume of a shipping container, in gallons
ii). the name of the material from which the container is made
iii). the shape of the container
A) i, ii, and iii
B) i and iii only
C) ii and iii only
56)
D) i and ii only
57) Determine which of the following describes qualitative data.
57)
i). the make of the car with license plate number VNS-862
ii). the license plate number VNS-862
iii). the number of vehicles whose license plate number begins with “VNS”
A) i and ii only
B) iii only
neither
i,
nor
ii,
nor
iii
C)
D) i only
58) Determine which of the following describes nominal data.
58)
i. My favorite days of the week are Friday, Saturday, and Tuesday.
ii. My favorite day of the week is Friday, my second-favorite is Saturday, and
third-favorite is Tuesday.
A) both i and ii
B) neither i nor ii
C) i only
D) ii only
59) Determine which of the following describes nominal data.
59)
i. Michaelangelo’s sells small, medium, large, and jumbo pizzas.
ii. Michaelangelo’s most-requested toppings are pepperoni, black olives, and mushrooms.
A) neither i nor ii
B) both i and ii
C) i only
D) ii only
60) Determine which of the following describes ordinal data.
60)
i. In the horse race, Betty’s Girl won, Mr. Ed placed, and Wabash showed.
ii. In the horse race, I bet on Betty’s Girl to win, Mr. Ed to place, and Wabash to show.
A) i only
B) both i and ii
C) neither i nor ii
D) ii only
61) Determine which of the following describes ordinal data.
i. My best friends are Georgia, Amithaba, and Raphael.
ii. My favorite numbers are 2, 7 and 13.
A) both i and ii
B) neither i nor ii
C) i only
42
61)
D) ii only
62) Which one of the following data are discrete?
62)
A) the average preseason ranking of the University of Connecticut’s women’s
basketball team over the past 10 years
B) the pre-season ranking of Duke University’s men’s basketball team
C) the height of the tallest player on Duke University’s men’s basketball team
D) the average height of players on the University of Connecticut’s women’s basketball
team
63) Which one of the following data are discrete?
63)
A) the speed of the boat’s propeller, in revolutions per minute
B) the number of crew members on the boat
C) the latitude and longitude of the boat’s port of departure
D) the latitude and longitude of a boat at sea
64) Which one of the following data are continuous?
64)
A) the average height of a sample of trees
B) the rankings of the trees, from most numerous to least numerous
C) the number of representatives of each species in the park
D) the number of species of trees in a park
65) Which one of the following data are continuous?
65)
A) the number of musicians performing in the MP3 file
B) the time remaining for an MP3 music download
C) the number of times the file has been downloaded
D) all of these represent continuous data
66) When rolling two six-sided dice, your total roll ranges from 2 (double ones) to 12
66)
(double sixes).Characterize the nature of the roll total.
A) qualitative and discrete
B) qualitative and continuous
C) quantitative and continuous
D) quantitative and discrete
67) When experimental units are people, they are sometimes called ________________.
A) personnel
B) subjects
C) topics
68) In an experiment, the ______________ is what is measured on each experimental unit.
A) subject
B) treatment
C) category
68)
D) outcome
69) Which of the following is the best description of a randomized experiment?
A) an experiment in which the treatments are assigned randomly to experimental units
B) an experiment in which the investigators are chosen at random
C) an experiment in which the outcomes are random
D) an experiment in which the experimental units are selected at random
43
67)
D) human units
69)
70) In a randomized experiment, if there are large differences in outcomes among the
70)
treatment groups, we can conclude that the differences are due to
_____________________.
A) deliberate data manipulation
B) the treatments
C) experimental error
D) random luck
71) Which of the following is the best description of a double-blind experiment?
71)
A) an experiment in which neither the investigators nor the subjects know the others’
names
B) an experiment in which both the investigators and the subjects are hidden from the
others’ views
C) an experiment in which neither the investigators nor the subjects know how the
treatments have been assigned
D) an experiment in which the subjects are blindfolded so they cannot see which
treatment is applied to them
72) In an experiment, subjects are put into two categories according to sex, and then each
72)
subject is randomly assigned a treatment . This is an example of…
A) randomized blocking
B) observational studies
C) gender bias
D) confounding
73) A(n) _______________ makes it difficult to determine whether an experimental
outcome is due to the applied treatment.
A) perplexer
C) error
73)
B) uncooperative subject
D) confounder
74) An experiment that tends to overestimate or underestimate the true value is said to be
______________.
A) un-randomized
C) flagrant
74)
B) biased
D) randomized
75) People are reluctant to admit to behavior that may reflect negatively on them. This can
lead to …
A) sampling bias
C) social acceptability bias
75)
B) voluntary response bias
D) hurt feelings
76) The question…
76)
“Do you favor a higher standard of living, even though it produces unclean air and water?”
… is an example of …
A) sampling bias
B) random sampling
C) leading question bias
D) framing
44
77) You ask your friends who they plan to vote for in the next congressional election. Based on their
77)
responses, you conclude that the candidate you favor cannot lose!
This is most likely an example of …
A) sampling bias
C) voluntary response bias
B) self-interest bias
D) randomized sampling
78) A small brew pub sent out questionnaires to a simple random sample of 250 customers
78)
asking whether they would like the brewery to include an imperial stout in their regular
offerings. Of the 250 questionnaires, 12 were returned and 10 of those were in favor of
including the stout. Specify the type of bias involved.
A) Voluntary response
B) Self-interest
Sampling
C)
D) Nonresponse
79) A sign in a grocery store claims that 92% of their customers believe them to have the
79)
freshest produce in the city. Specify the type of bias involved.
A) Leading question
B) Self-interest
Voluntary
response
C)
D) Social acceptability
80) A radio talk show invites people to call in and state whether or not they think that sexual
harassment in the work place is a common problem.
A) Social acceptability
B) Sampling
Voluntary
response
C)
D) Self-interest
45
80)
Answer Key
Testname: UNTITLED1
1) D
2) A
3) A
4) D
5) D
6) C
7) B
8) D
9) D
10) B
11) C
12) A
13) C
14) A
15) D
16) A
17) C
18) A
19) C
20) D
21) C
22) A
23) B
24) C
25) D
26) C
27) D
28) D
29) A
30) D
31) A
32) D
33) D
34) B
35) D
36) A
37) B
38) B
39) A
40) Misleading
41) Accurate
42) D
43) B
44) A
45) B
46) B
47) A
48) B
49) A
46
Answer Key
Testname: UNTITLED1
50) A
51) D
52) B
53) B
54) A
55) D
56) C
57) A
58) C
59) D
60) B
61) B
62) B
63) B
64) A
65) B
66) D
67) B
68) D
69) A
70) B
71) C
72) A
73) D
74) B
75) C
76) C
77) A
78) D
79) B
80) C
47

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