Deck 2: Organizing and Visualizing Variables

Question 1

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, if 10 calls lasted 30 minutes or more, how many calls lasted less than 5 minutes?

A)10
B)185
C)295
D)500

Answer 1

185

Question 2

When constructing charts, the following is plotted at the class midpoints:

A)frequency histograms.
B)percentage polygons.
C)cumulative percentage polygon (ogives).
D)All of the above.

Answer 2

D

Question 3

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, what is the cumulative relative frequency for the percentage of calls that lasted under 20 minutes?

A)0.10
B)0.59
C)0.76
D)0.84

Answer 3

0.84

Question 4

SCENARIO 2-1
An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.A representative from a local insurance agency selected a random sample of insured drivers and recorded, X, the number of claims each made in the last 3 years, with the following results. $$\begin{array} { r r } X & f \\\hline 1 & 14 \\2 & 18 \\3 & 12 \\4 & 5 \\5 & 1\end{array}$$

-Referring to Scenario 2-1, how many total claims are represented in the sample?

A)15
B)50
C)111
D)250

Question 5

A professor of economics at a small Texas university wanted to determine what year in school students were taking his tough economics course.Shown below is a pie chart of the results.What percentage of the class took the course prior to reaching their senior year?

A)14%
B)44%
C)54%
D)86%

Question 6

2-2 Organizing and Visualizing Variables
At a meeting of information systems officers for regional offices of a national company, a survey was taken to determine the number of employees the officers supervise in the operation of their departments, where X is the number of employees overseen by each information systems officer. $$\begin{array} { r r } X & f \\\hline 1 & 7 \\2 & 5 \\3 & 11 \\4 & 8 \\5 & 9\end{array}$$

-Referring to Scenario 2-2, how many regional offices are represented in the survey results?

A)5
B)11
C)15
D)40

Question 7

SCENARIO 2-1
An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.A representative from a local insurance agency selected a random sample of insured drivers and recorded, X, the number of claims each made in the last 3 years, with the following results. $$\begin{array} { r r } X & f \\\hline 1 & 14 \\2 & 18 \\3 & 12 \\4 & 5 \\5 & 1\end{array}$$

-Referring to Scenario 2-1, how many drivers are represented in the sample?

A)5
B)15
C)18
D)50

Question 8

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, if 1,000 calls were randomly sampled, how many calls lasted under 10 minutes?

A)220
B)370
C)410
D)590

Question 9

SCENARIO 2-4
A survey was conducted to determine how people rated the quality of programming available on television.Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality).The stem-and-leaf display of the data is shown below. $$\begin{array} { l l } \text { Stem } & \text { Leaves } \\\hline 3 & 24 \\4 & 03478999 \\5 & 0112345 \\6 & 12566 \\7 & 01 \\8 & \\9 & 2\end{array}$$

-Referring to Scenario 2-4, what percentage of the respondents rated overall television quality with a rating from 50 through 75?

A)11
B)40
C)44
D)56

Question 10

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, if 100 calls were randomly sampled, how many calls lasted 15 minutes or longer?

A)10
B)14
C)26
D)74

Question 11

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, what is the width of each class?

A)1 minute
B)5 minutes
C)2%
D)100%

Question 12

SCENARIO 2-4
A survey was conducted to determine how people rated the quality of programming available on television.Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality).The stem-and-leaf display of the data is shown below. $$\begin{array} { l l } \text { Stem } & \text { Leaves } \\\hline 3 & 24 \\4 & 03478999 \\5 & 0112345 \\6 & 12566 \\7 & 01 \\8 & \\9 & 2\end{array}$$

-Referring to Scenario 2-4, what percentage of the respondents rated overall television quality with a rating of 50 or below?

A)11
B)40
C)44
D)56

Question 13

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, if 100 calls were randomly sampled, of them would have lasted at least 15 minutes but less than 20 minutes

A)6
B)8
C)10
D)16

Question 14

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, what is the cumulative relative frequency for the percentage of calls that lasted 10 minutes or more?

A)0.16
B)0.24
C)0.41
D)0.90

Question 15

SCENARIO 2-3
Every spring semester, the School of Business coordinates a luncheon with local business leaders for graduating seniors, their families, and friends.Corporate sponsorship pays for the lunches of each of the seniors, but students must purchase tickets to cover the cost of lunches served to guests they bring with them.The following histogram represents the attendance at the senior luncheon, where X is the number of guests each graduating senior invited to the luncheon and f is the number of graduating seniors in each category.
Referring to the histogram from Scenario 2-3, how many graduating seniors attended the luncheon?

A)4
B)152
C)275
D)388

Question 16

A type of vertical bar chart in which the categories are plotted in the descending rank order of the magnitude of their frequencies is called a

A)contingency table.
B)Pareto chart.
C)stem-and-leaf display.
D)pie chart.

Question 17

2-2 Organizing and Visualizing Variables
At a meeting of information systems officers for regional offices of a national company, a survey was taken to determine the number of employees the officers supervise in the operation of their departments, where X is the number of employees overseen by each information systems officer. $$\begin{array} { r r } X & f \\\hline 1 & 7 \\2 & 5 \\3 & 11 \\4 & 8 \\5 & 9\end{array}$$

-Referring to Scenario 2-2, across all the regional offices, how many total employees were supervised by those surveyed?

A)15
B)40
C)127
D)200

Question 18

SCENARIO 2-3
Every spring semester, the School of Business coordinates a luncheon with local business leaders for graduating seniors, their families, and friends.Corporate sponsorship pays for the lunches of each of the seniors, but students must purchase tickets to cover the cost of lunches served to guests they bring with them.The following histogram represents the attendance at the senior luncheon, where X is the number of guests each graduating senior invited to the luncheon and f is the number of graduating seniors in each category.
Referring to the histogram from Scenario 2-3, if all the tickets purchased were used, how many guests attended the luncheon?

A)4
B)152
C)275
D)388

Question 19

The width of each bar in a histogram corresponds to the

A)differences between the boundaries of the class.
B)number of observations in each class.
C)midpoint of each class.
D)percentage of observations in each class.

Question 20

SCENARIO 2-4
A survey was conducted to determine how people rated the quality of programming available on television.Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality).The stem-and-leaf display of the data is shown below. $$\begin{array} { l l } \text { Stem } & \text { Leaves } \\\hline 3 & 24 \\4 & 03478999 \\5 & 0112345 \\6 & 12566 \\7 & 01 \\8 & \\9 & 2\end{array}$$

-Referring to Scenario 2-4, what percentage of the respondents rated overall television quality with a rating of 80 or above?

A)0
B)4
C)96
D)100

Question 21

Which of the following is appropriate for displaying data collected on the different brands of cars students at a major university drive?

A)A Pareto chart
B)A two-way classification table
C)A histogram
D)A scatter plot

Question 22

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, if 100 calls were sampled, of them would have lasted less than 15 minutes.

A)26
B)74
C)10
D)None of the above.

Question 23

When studying the simultaneous responses to two categorical questions, you should set up a

A)contingency table.
B)frequency distribution table.
C)cumulative percentage distribution table.
D)histogram.

Question 24

You have collected data on the responses to two questions asked in a survey of 40 college students majoring in business-What is your gender (Male = M; Female = F) and What is your major (Accountancy = A; Computer Information Systems = C; Marketing = M).Which of the following is the best for presenting the data?

A)A contingency table.
B)A stem-and-leaf display
C)A time-series plot.
D)A Pareto chart.

Question 25

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, if 100 calls were sampled, of them would have lasted 20 minutes or more.

A)26
B)16
C)74
D)None of the above.

Question 26

You have collected information on the market share of 5 different search engines used by U.S.Internet users in a quarter.Which of the following is the best for presenting the information?

A)A pie chart.
B)A histogram
C)A stem-and-leaf display.
D)A contingency table.

Question 27

A survey of 150 executives were asked what they think is the most common mistake candidates make during job interviews.Six different mistakes were given.Which of the following is the best for presenting the information?

A)A bar chart.
B)A histogram
C)A stem-and-leaf display.
D)A contingency table.

Question 28

Data on the number of credit hours of 20,000 students at a public university enrolled in a Spring semester were collected.Which of the following is the best for presenting the information?

A)A pie chart.
B)A Pareto chart.
C)A stem-and-leaf display.
D)A contingency table.

Question 29

SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following table contains the result. $$\begin{array} { | l | l | l | } \hline & \text { Did Well in Midterm } & \text { Did Poorly in Midterm } \\\hline \text { Studying for Exam } & 80 & 20 \\\hline \text { Went Bar Hopping } & 30 & 70 \\\hline\end{array}$$

-Referring to Scenario 2-6, percent of the students in the sample went bar hopping the weekend before the midterm and did well on the midterm.

A)15
B)27.27
C)30
D)50

Question 30

You have collected data on the number of U.S.households actively using online banking and/or online bill payment over a 10-year period.Which of the following is the best for presenting the data?

A)A pie chart.
B)A stem-and-leaf display
C)A side-by-side bar chart.
D)A time-series plot.

Question 31

You have collected data on the approximate retail price (in $) and the energy cost per year (in $)of 15 refrigerators.Which of the following is the best for presenting the data?

A)A pie chart.
B)A scatter plot
C)A side-by-side bar chart.
D)A contingency table.

Question 32

Data on 1,500 students' height were collected at a larger university in the East Coast.Which of the following is the best chart for presenting the information?

A)A pie chart.
B)A Pareto chart.
C)A side-by-side bar chart.
D)A histogram.

Question 33

Data on the number of part-time hours students at a public university worked in a week were collected.Which of the following is the best chart for presenting the information?

A)A pie chart.
B)A Pareto chart.
C)A percentage table.
D)A percentage polygon.

Question 34

One of the developing countries is experiencing a baby boom, with the number of births rising for the fifth year in a row, according to a BBC News report.Which of the following is best for displaying this data?

A)A Pareto chart
B)A two-way classification table
C)A histogram
D)A time-series plot

Question 35

You have collected information on the consumption by the 15 largest coffee-consuming nations.Which of the following is the best for presenting the shares of the consumption?

A)A pie chart.
B)A Pareto chart
C)A side-by-side bar chart.
D)A contingency table.

Question 36

SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following table contains the result. $$\begin{array} { | l | l | l | } \hline & \text { Did Well in Midterm } & \text { Did Poorly in Midterm } \\\hline \text { Studying for Exam } & 80 & 20 \\\hline \text { Went Bar Hopping } & 30 & 70 \\\hline\end{array}$$

-Referring to Scenario 2-6, of those who went bar hopping the weekend before the midterm in the sample, percent of them did well on the midterm.

A)15
B)27.27
C)30
D)55

Question 37

You have collected data on the number of complaints for 6 different brands of automobiles sold in the US over a 10-year period.Which of the following is the best for presenting the data?

A)A contingency table.
B)A stem-and-leaf display
C)A time-series plot.
D)A side-by-side bar chart.

Question 38

You have collected data on the monthly seasonally adjusted civilian unemployment rate for theUnited States over a 10-year period.Which of the following is the best for presenting the data?

A)A contingency table.
B)A stem-and-leaf display
C)A time-series plot.
D)A side-by-side bar chart.

Question 39

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } \text { Time(inMinutes) } & \begin{array} { c } \text { Relative } \\\text { Frequency }\end{array} \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than } 20 & 0.10 \\20 \text { but less than } 25 & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}$$

-Referring to Scenario 2-5, if 100 calls were sampled, of them would have lasted less than 5 minutes or at least 30 minutes or more.

A)35
B)37
C)39
D)None of the above.

Question 40

SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following table contains the result. $$\begin{array} { | l | l | l | } \hline & \text { Did Well in Midterm } & \text { Did Poorly in Midterm } \\\hline \text { Studying for Exam } & 80 & 20 \\\hline \text { Went Bar Hopping } & 30 & 70 \\\hline\end{array}$$

-Referring to Scenario 2-6, of those who did well on the midterm in the sample, percent of them went bar hopping the weekend before the midterm.

A)15
B)27.27
C)30
D)50

Question 41

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves
Referring to Scenario 2-7, the civil suit with the fourth shortest waiting time between when the suit was filed and when it was adjudicated had a wait of months.

Question 42

In a contingency table, the number of rows and columns

A)must always be the same.
B)must always be 2.
C)must add to 100%.
D)None of the above.

Question 43

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, if a frequency distribution with equal sized classes was made from this data, and the first class was "0 but less than 10," the frequency of the fifth class would be_.

Question 44

SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following table contains the result. $$\begin{array} { | l | l | l | } \hline & \text { Did Well in Midterm } & \text { Did Poorly in Midterm } \\\hline \text { Studying for Exam } & 80 & 20 \\\hline \text { Went Bar Hopping } & 30 & 70 \\\hline\end{array}$$

-Referring to Scenario 2-6, if the sample is a good representation of the population, we can expectpercent of the students in the population to spend the weekend studying and do poorly on the midterm.

A)10
B)20
C)45
D)50

Question 45

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, of the 100 members visited the health club no more than 12 times in a year.

Question 46

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, the person who visited the health club less than anyone else in the sample visited the facility times.

Question 47

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves
Referring to Scenario 2-7, locate the first leaf, i.e., the lowest valued leaf with the lowest valued stem.This represents a wait of months.

Question 48

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, the person who has the largest leaf associated with the smallest stem visited the facility times.

Question 49

Retailers are always interested in determining why a customer selected their store to make a purchase.A sporting goods retailer conducted a customer survey to determine why its customers shopped at the store.The results are shown in the bar chart below.What proportion of the customers responded that they shopped at the store because of the merchandise or the convenience?

A)35%
B)50%
C)65%
D)85%

Question 50

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, the person who visited the health club more than anyone else in the sample visited the facility times.

Question 51

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves
Referring to Scenario 2-7, percent of the cases were adjudicated within the first 2 years.

Question 52

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves
Referring to Scenario 2-7, the civil suit with the longest wait between when the suit was filed and when it was adjudicated had a wait of months.

Question 53

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves
Referring to Scenario 2-7, if a frequency distribution with equal sized classes was made from this data, and the first class was "10 but less than 20," the relative frequency of the third class would be _.

Question 54

SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following table contains the result. $$\begin{array} { | l | l | l | } \hline & \text { Did Well in Midterm } & \text { Did Poorly in Midterm } \\\hline \text { Studying for Exam } & 80 & 20 \\\hline \text { Went Bar Hopping } & 30 & 70 \\\hline\end{array}$$

-Referring to Scenario 2-6, if the sample is a good representation of the population, we can expectpercent of those who spent the weekend studying to do poorly on the midterm.

A)10
B)20
C)45
D)50

Question 55

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves
Referring to Scenario 2-7, if a frequency distribution with equal sized classes was made from this data, and the first class was "10 but less than 20," the cumulative percentage of the second class would be _.

Question 56

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, of the 100 members visited the health club at least 52 times in a year.

Question 57

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves
Referring to Scenario 2-7, if a frequency distribution with equal sized classes was made from this data, and the first class was "10 but less than 20," the frequency of that class would be .

Question 58

SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following table contains the result. $$\begin{array} { | l | l | l | } \hline & \text { Did Well in Midterm } & \text { Did Poorly in Midterm } \\\hline \text { Studying for Exam } & 80 & 20 \\\hline \text { Went Bar Hopping } & 30 & 70 \\\hline\end{array}$$

-Referring to Scenario 2-6, if the sample is a good representation of the population, we can expectpercent of those who did poorly on the midterm to have spent the weekend studying.

A)10
B)22.22
C)45
D)50

Question 59

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves
Referring to Scenario 2-7, percent of the cases were not adjudicated within the first 4 years.

Question 60

SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following table contains the result. $$\begin{array} { | l | l | l | } \hline & \text { Did Well in Midterm } & \text { Did Poorly in Midterm } \\\hline \text { Studying for Exam } & 80 & 20 \\\hline \text { Went Bar Hopping } & 30 & 70 \\\hline\end{array}$$

-Referring to Scenario 2-6, percent of the students in the sample spent the weekend studying and did well on the midterm.

A)40
B)50
C)72.72
D)80

Question 61

SCENARIO 2-10
The relative frequency histogram below represents scores achieved by 200 job applicants on a personality profile.
Referring to the histogram from Scenario 2-10, percent of the applicants scored between20 and below 50.

Question 62

SCENARIO 2-11
The ordered array below resulted from selecting a sample of 25 batches of 500 computer chips and determining how many in each batch were defective.
Referring to Scenario 2-11, if a frequency distribution for the defects data is constructed, using "0 but less than 5" as the first class, the relative frequency of the "15 but less than 20" class wouldbe _.

Question 63

SCENARIO 2-10
The relative frequency histogram below represents scores achieved by 200 job applicants on a personality profile.
Referring to the histogram from Scenario 2-10, percent of the applicants scored below20 or at least 50.

Question 64

SCENARIO 2-9
The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town.
Referring to Scenario 2-9, the class midpoint of the second class is .

Question 65

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, if a frequency distribution with equal sized classes was made from this data, and the first class was "0 but less than 10," the class midpoint of the third class would be_.

Question 66

SCENARIO 2-9
The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town.
Referring to Scenario 2-9, percent of the apartments rented for $1,400 or more.

Question 67

SCENARIO 2-9
The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town.
Referring to Scenario 2-9, percent of the apartments rented for at least $1,300.

Question 68

SCENARIO 2-10
The relative frequency histogram below represents scores achieved by 200 job applicants on a personality profile.
Referring to the histogram from Scenario 2-10, 90% of the job applicants scored above or equal to .

Question 69

SCENARIO 2-9
The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town.
Referring to Scenario 2-9, apartments rented for at least $1,200 but less than $1,400.

Question 70

SCENARIO 2-10
The relative frequency histogram below represents scores achieved by 200 job applicants on a personality profile.
Referring to the histogram from Scenario 2-10, the number of job applicants who scored between30 and below 60 is _.

Question 71

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, if a frequency distribution with equal sized classes was made from this data, and the first class was "0 but less than 10," the relative frequency of the last class would be_.

Question 72

SCENARIO 2-11
The ordered array below resulted from selecting a sample of 25 batches of 500 computer chips and determining how many in each batch were defective.
Referring to Scenario 2-11, construct a frequency distribution for the defects data, using "0 but less than 5" as the first class.

Question 73

SCENARIO 2-9
The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town.
Referring to Scenario 2-9, the percentage of apartments renting for less than $1,400 is .

Question 74

SCENARIO 2-10
The relative frequency histogram below represents scores achieved by 200 job applicants on a personality profile.
Referring to the histogram from Scenario 2-10, half of the job applicants scored below .

Question 75

SCENARIO 2-10
The relative frequency histogram below represents scores achieved by 200 job applicants on a personality profile.
Referring to the histogram from Scenario 2-10, the number of job applicants who scored 50 or above is .

Question 76

SCENARIO 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
Referring to Scenario 2-8, if a frequency distribution with equal sized classes was made from this data, and the first class was "0 but less than 10," the cumulative percentage of the next-to-last class would be .

Question 77

SCENARIO 2-10
The relative frequency histogram below represents scores achieved by 200 job applicants on a personality profile.
Referring to the histogram from Scenario 2-10, percent of the job applicants scored between 10 and 20.

Question 78

SCENARIO 2-9
The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town.
Referring to Scenario 2-9, the relative frequency of the second class is .

Question 79

SCENARIO 2-10
The relative frequency histogram below represents scores achieved by 200 job applicants on a personality profile.
Referring to the histogram from Scenario 2-10, percent of the job applicants scored below 50.

Question 80

SCENARIO 2-11
The ordered array below resulted from selecting a sample of 25 batches of 500 computer chips and determining how many in each batch were defective.
Referring to Scenario 2-11, if a frequency distribution for the defects data is constructed, using "0 but less than 5" as the first class, the frequency of the "20 but less than 25" class would be_.