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Study Resources (Business Management)

      44. The income levels vary by race and educational attainment. To examine this inequality in the income, data have been collected for seven different years on the median income earned by an individual based on the race and education. Year Racial Demographic Educational attainment Median Income 2003 White High School Graduate $33,405 2003.
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      67. DJ needs to display data over time. Which of the following charts should DJ use? ?? a. scatter chart b. pie chart c. bar chart d. ?line chart         68. Data are shown below on the quality rating, volume, average wait time from pull-up to completion, average unit purchase, and revenue tier for franchises of a.
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    41. To identify patterns across transactions, we can use a. association rules. b. ?complete linkage. c. centroid linkage. d. k-means.       42. The lift ratio of an association rule with a confidence value of 0.45 and in which the consequent occurs in 6 out of 10 cases is a. 1.40. b. 0.54. c. 1.00. d. 0.75.   ?       43. Which statement.
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    61. The College Board originally scaled SAT scores so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. Assuming scores follow a bell-shaped distribution, use the empirical rule to find the percentage of students who scored greater than.
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    11. The following image is a ? ? a. sparkline. b. trendline. c. gridline. d. line chart.         12. DJ needs to display data over time. Which of the following charts should he use?   a. Scatter chart b. Pie chart c. Bar chart d. Line chart         13. A time series plot is also known as a   a. boxplot. b. frequency.
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      60. Consider the following data on income and savings of a sample of residents in a locality: Income ($ thousands) Savings ($ thousands) 50 10 51 11 52 13 55 14 56 15 58 15 60 16 62 16 65 17 66 17   a. Compute the correlation coefficient. Is there a positive correlation between the income and savings? What is your interpretation?b..
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    To examine the local housing market in a particular region, a sample of 120 homes sold during a year is collected. The data are given below.   LandValue ($) BuildingValue ($) Acres Age Price ($) 18100 92500 0.5 53.9 114885 23600 152700 0.22 19.7 180895 25900 134300 0.3 15.9 162038 22100 129600 0.23 41 154496 23900 168700.
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      42. A local search service company surveys on the number of service centers available in three major cities for different brands of automobiles with an objective to improve the services to its customers. The data on the 20 automobile brands and the number of service centers are given below:   Brands Number.
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    46. The partial relative frequency distribution is given below:   Group Relative Frequency 1 0.15 2 0.32 3 0.29 4   a. What is the relative frequency of group 4?b. The total sample size is 400. What is the frequency of group 4?c. Show the frequency distribution.d. Show the percent frequency distribution.     47. A survey on the most preferred.
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    49. The manager of an automobile showroom studied the time spent by each salesperson interacting with the customer in a month apart from the other jobs assigned to them. The data in hours are given below. 17 13 18 16 20 24 15 19 19 12 10 16 26 27 13 23 17 15 24 20 14 21 26 24   Using classes 10-13,.
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    31. A ______________ is used for examining data with more than two variables, and it includes a different vertical axis for each variable. a. scatter plot b. PivotChart c. column chart d. parallel-coordinates plot         32. A ______________ is useful for visualizing hierarchical data along multiple dimensions. a. heat map b. hierarchical map c. treemap d..
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    47. Consider the following data on 30 different investments and their maturity values after 15 years. Investment ($) Future value ($) 1500 3119 2000 4158 2200 4574 2480 5156 2850 5925 3250 6757 3560 7401 3890 8088 4180 8690 4390 9127 4550 9460 4800 9979 5150 10707 5320 11060 5510 11455 5760 11975 6140 12765 6300 13098 6480 13472 6590 13701 6712 13954 6900 14345 7110 14782 7480 15551 7590 15780 7670 15946 7700 16008 7840 16299 8010 16653 8500 17671   a..
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      45. Consider a study on the number of accidents that occurred in Ten U.S. states in different cities for three consecutive years. Create a PivotTable in Excel to answer the following questions. The PivotTable should group the number of accidents into yearly bins and display the sum of accidents that occurred each.
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1. ?The goal of ___________________ is to use the variable values to identify relationships between observations. a. ?unsupervised learning b. ?data mining c. ?McQuitty’s method d. ?Ward's method       2. Which is NOT a primary option for addressing missing data? a. ?To discard observations with any missing values b. ?To discard any variable with missing values c. ?To fill.
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    39. The following table is an example of the profit made by Hydro America, a water servicing company, for five different years. Year Total revenue ($) Cost of revenue ($) Gross profit ($) 2011 62723201 26256000 36467201 2012 67177612 37026005 30151607 2013 72648252 35054123 37594129 2014 71225185 35187462 36037723 2015 75847373 39298243 36549130 Reformat the table to.
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    31. Complete linkage can be used to measure the distance between _________ in cluster analysis.? a. ?objects b. ?clusters c. ?observations d. ?wards       32. Complete linkage can be used to measure the distance between clusters that are the _________________ in cluster analysis.? a. ?most similar b. ?most different c. ?farthest apart d. ?closest       33. Single linkage can be used to.
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    62. This bar chart displays the demographics of a Business Analysis class. How many males students are in the class? ?   ? a. ?15 b. ?50 c. ?75 d. ?30         63. Natalie needs to compare the number of employees by job title for the last five years. Which of the following charts should Natalie use? ?? a. ?scatter chart b..
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    45. The data on the percentage of visitors in the previous and current years at 12 well-known national parks of the United States are given below.   National Parks Percentage of visitors previous year Percentage of visitors current year The Smokies 78.2% 84.2% The Grand Canyon 83.5% 81.6% Theodore Roosevelt 81.6% 84.8% Yosemite 74.2% 78.4% Yellowstone 77.9%.
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    57. The results of a survey showed that, on average, children spend 5.6 hours at PlayStation per week. Suppose that the standard deviation is 1.7 hours and that the number of hours at PlayStation follows a bell-shaped distribution. a. Use the empirical rule to calculate the percentage of children who spend.
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    21. A two-dimensional graph representing the data using different shades of color to indicate magnitude is called a a. heat map. b. bubble chart. c. column chart. d. pie chart.         22. To avoid problems in interpreting the differences in color in a heat map, ____________ can be added. a. a bubble chart b. a.
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      59. Eight observations taken for two variables are as follows:   11 35 13 32 17 26 18 25 22 20 24 17 26 11 28 10 a. Develop a scatter diagram with x on the horizontal axis.b. What does the scatter diagram developed in part (a) indicate about the relationship between the two variables?c. Compute and interpret the sample.
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    21. When clustering only by dummy variables that represent categorical variables, the simplest measure of similarity between two observations is called the a. ?matching coefficient. b. Jaccard's coefficient. c. Euclidean distance. d. ?antecedent.       22. A method for modifying variables that reduces bias prior to cluster analysis is a. ?standardization. b. ?weighting. c. ?removing outliers. d. ?randomizing.       23. Euclidean distance can.
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    53. Consider the following survey results regarding marital status by age. Age Category Never Married (%) Married (%) Divorced (%) 18-24 49 35 16 25-34 44 35 21 35-44 28 45 27 45-54 22 58 20   a. Construct a stacked-column chart to display the survey data on marital status. Use Age Category as the variable on.
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      41. The data on the scores obtained by students in five different entrance exams have been collected from 50 colleges and they are provided below. Create a PivotTable in Excel to display the number of students who took each exam and the average score for students in each exam.   Exams Scores Exams Scores SAT.
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      43. A summary on commodities below lists the change in price on a particular day for each commodity belonging to three categories - Base Metals, Precious Metals, and Agricultural & Cattle Futures.   Commodity Summary Commodity Type of Commodity Price Change (%) Aluminu Base metals 1700 0.0750 Gold Precious metals 1229 -0.2300 Corn Agricultural & Cattle Futures.
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    57. The following table shows the average monthly distance travelled (in Billion Miles) by vehicles on urban highways for five different years.   Urban Highways - Average Monthly Distance Travelled by Vehicles (Billion Miles) Years Jan Feb Mar Apr May Jun July Aug Sep Oct Nov Dec Year 1 4.22 5.32 5.21 5.12 4.92.
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