Question 1

A survey of automobiles parked in student and staff lots at a large university classified the brands by country of origin,as seen in the table. 
What is the marginal distribution of origin?

Accepted Answer

A) 52% North American,13% European,35% Asian 
B) 56% North American,10% European,34% Asian 
C) 54% Students,46% Staff 
D) 107% North American,16% European,54% Asian 
E) 48% North American,16% European,36% Asian

Question 2

A college examined the impact of an applicant's ethnicity on the likelihood of admission to a particular program.The data are summarized in the table below. 
What percent of Asians were wait-listed?

Accepted Answer

A) 17.5% 
B) 3.3% 
C) 18.5% 
D) 36.1% 
E) 45.4%

Question 3

The City of Windsor Department of Parks and Recreation is planning to build a recreation centre in one of the city's parks.They conducted a poll to find out the types of physical activities the local population would be interested in.The poll was based on telephone responses from 1013 randomly selected adults.The table shows the percentages of people who expressed interest in various activities. 
Which of the following displays is/are appropriate for these data? (More than one display may be appropriate. )
I II

III

Accepted Answer

A) II 
B) I,II,III 
C) I,II 
D) I 
E) None of these displays are appropriate.

Question 4

Most patients who undergo surgery make routine recoveries and are discharged as planned,but some patients experience complications and their discharge is delayed.A small city has a large hospital and a small hospital,each performing major and minor surgeries.Data is collected at each hospital to see how many surgical patients have their discharges delayed by postsurgical complications.The results are shown in the following table. 
Overall,for what percent of surgical patients was discharge delayed?

Accepted Answer

A) 1.8% 
B) 9.4% 
C) 42% 
D) 9.1% 
E) 7.6%

Question 5

Just how accurate are the weather forecasts we hear every day? The table below compares the daily forecast with a city's actual weather for a year. 
On what percent of days was rain predicted?

Accepted Answer

A) 14.8% 
B) 24.1% 
C) 38.6% 
D) 9.3% 
E) 11.5%

Question 6

A real estate company kept a database on the apartments in a certain city.The percentages of various types of apartments are listed below. 
What percentage of the apartments in the city are 1-bedroom or 2-bedroom apartments?

Accepted Answer

A) 69.9% 
B) 69.4% 
C) 71.3% 
D) 73.3% 
E) The percent cannot be determined from the given percentages because the categories overlap.

Question 7

The City of Windsor Department of Parks and Recreation is planning to build a recreation centre in one of the city's parks.They conducted a poll to find out the types of physical activities the local population would be interested in.The poll was based on telephone responses from 1013 randomly selected adults.The table shows the percentages of people who expressed interest in various activities. 
Which of the following displays is/are appropriate for these data? (More than one display may be appropriate. )
I II

III

Accepted Answer

A) I 
B) I,II 
C) I,II,III 
D) II 
E) None of these displays are appropriate.

Question 8

A survey of automobiles parked in student and staff lots at a large university classified the brands by country of origin,as seen in the table. 
What is the conditional distribution of origin for staff?

Accepted Answer

A) 25% North American,6% European,12% Asian 
B) 49% North American,19% European,32% Asian 
C) 28% North American,11% European,18% Asian 
D) 53% North American,16% European,31% Asian 
E) 58% North American,13% European,28% Asian

Question 9

A company held a cholesterol screening clinic for its employees.The results are summarized in the table below by age group and cholesterol level.  
Create a segmented bar graph which shows the conditional distributions of cholesterol levels for each age group.

Accepted Answer

The answer of A company held a cholesterol screening clinic...

Question 10

Most patients who undergo surgery make routine recoveries and are discharged as planned,but some patients experience complications and their discharge is delayed.A small city has a large hospital and a small hospital,each performing major and minor surgeries.Data is collected at each hospital to see how many surgical patients have their discharges delayed by postsurgical complications.The results are shown in the following table. 
What were the discharge delay rates at each hospital?

Accepted Answer

A) Large hospital: 12.7%
Small hospital: 8.9% 
B) Large hospital: 9.6%
Small hospital: 9.6% 
C) Large hospital: 16%
Small hospital: 28% 
D) Large hospital: 9.6%
Small hospital: 2.6% 
E) Large hospital: 9.3%
Small hospital: 10.3%

Question 11

Of the 1,606 applicants to a college program,456 were Black or Hispanic,300 were Asian,and 850 were White.Summarize the relative frequency distribution of ethnicity with a sentence or two in the proper context.

Accepted Answer

A) Of the 1,606 students who applied for admission to the college program,3% were Black or Hispanic,2% were Asian,and 5% were White. 
B) Of the 1,606 students who applied for admission to the college program,54% were Black or Hispanic,35% were Asian,and 53% were White. 
C) Of the 1,606 students who applied for admission to the college program,14% were Black,14% were Hispanic,19% were Asian,and 53% were White. 
D) Of the 1,606 students accepted in the college program,28% were Black or Hispanic,19% were Asian,and 53% were White. 
E) Of the 1,606 students who applied for admission to the college program,28% were Black or Hispanic,19% were Asian,and 53% were White.

Question 12

Statistics Canada gives the following mortality data for Canada in 2007. 
Is it reasonable to conclude that cancer or accidents were the cause of approximately 33.8% of deaths in 2002?

Accepted Answer

A) No,because the percentages do not add up to 100%. 
B) Yes,because these categories do not overlap. 
C) Yes,because the percentages can always be added in relative frequency tables. 
D) No,because the percentages in relative frequencies tables can never be added. 
E) No,because these categories overlap.

Question 13

The table compares what students at a Canadian college did after graduating in 1992,1998,and 2003.  
Create a segmented bar graph which shows the conditional distributions of plans for each of the three years.

Accepted Answer

The answer of The table compares what students at a...

Question 14

The focus of a recent survey was was on teenagers' familiarity with and use of modern technology.The teenagers were asked if they used each of the following technologies on a daily basis and if the technology was critically important to own.For each question,the percentage of those responding "Yes" is given.Subtracting the "Use daily" percentage from the "Critically important to own" percentage gives the "Importance Gap." Here are the results:  
Create a bar chart for the "Importance Gap".

Accepted Answer

The answer of The focus of a recent survey was...

Question 15

The Centers for Disease Control in the U.S.A.lists causes of death for individual states in 2002.The mortality data for one state is given. 
Which of the following displays is/are appropriate for these data? (More than one display may be appropriate. )
I II

III

Accepted Answer

A) I,II 
B) I,II,III 
C) I 
D) II 
E) None of these displays are appropriate.

Question 16

A survey of automobiles parked in student and staff lots at a large university classified the brands by country of origin,as seen in the table. 
What percent of all the cars surveyed were foreign?

Accepted Answer

A) 44.2% 
B) 18.9% 
C) 13.1% 
D) 25.3% 
E) 31.1%

Question 17

A survey of automobiles parked in student and staff lots at a large university classified the brands by country of origin.The results are listed in the table below.  
Create a segmented bar graph which shows the conditional distributions of origin for both students and staff.

Accepted Answer

The answer of A survey of automobiles parked in student...

Question 18

The table below compares what students at a small Canadian college did after graduating with a bachelor's degree in 1992,1998,and 2003.A graphical display of the conditional distributions of what students did after graduation by year is given.

Does this study present any evidence that postgraduation plans have changed over this 11-year period? Explain.

Accepted Answer

A) Yes.There is evidence that the percentage of graduates entering the work force after graduation has increased from 1992 to 2003.Likewise,the percentage of graduates continuing their education appears to have decreased from 1992 to 2003. 
B) Yes.There is evidence that the percentage of graduates continuing their education has increased from 1992 to 2003.Likewise,the percentage of graduates entering the work force after graduation appears to have decreased from 1992 to 2003. 
C) No.The percentage of graduates continuing their education has increased from 1992 to 2003.Likewise,the percentage of graduates entering the work force after graduation appears to have decreased from 1992 to 2003.However,this is not sufficient evidence to show any change due to the fact that those entering the military or seeking other options remained relatively constant. 
D) No.The percentage of graduates continuing their education has increased from 1992 to 2003.Likewise,the percentage of graduates entering the work force after graduation appears to have decreased from 1992 to 2003.However,this is not sufficient evidence to show any change due to the fact that the number of students graduating has increased over this same time period. 
E) Yes.There is evidence that the percentage of graduates continuing their education and entering the work force after graduation has increased from 1992 to 2003.

Question 19

Students in a Political Science course were asked to describe their politics as "Liberal","Moderate",or "Conservative." The results are listed in the table below.  
Create a segmented bar graph which shows the conditional distributions by gender for each political category.

Accepted Answer

The answer of Students in a Political Science course were...

Question 20

A company held a blood pressure screening clinic for its employees.The results are summarized in the table below by age group and blood pressure level. 
Find the conditional distribution of blood pressure level for employees under 30.

Accepted Answer

A) 18% low,47% normal,35% high 
B) 23% low,51% normal,27% high 
C) 22% low,49% normal,29% high 
D) 27% low,49% normal,24% high 
E) 6% low,10% normal,5% high

Exam 2: Displaying and Describing Categorical Data

A survey of automobiles parked in student and staff lots at a large university classified the brands by country of origin,as seen in the table. What is the marginal distribution of origin?

A college examined the impact of an applicant's ethnicity on the likelihood of admission to a particular program.The data are summarized in the table below. What percent of Asians were wait-listed?

Just how accurate are the weather forecasts we hear every day? The table below compares the daily forecast with a city's actual weather for a year. On what percent of days was rain predicted?

A real estate company kept a database on the apartments in a certain city.The percentages of various types of apartments are listed below. What percentage of the apartments in the city are 1-bedroom or 2-bedroom apartments?

A survey of automobiles parked in student and staff lots at a large university classified the brands by country of origin,as seen in the table. What is the conditional distribution of origin for staff?

A company held a cholesterol screening clinic for its employees.The results are summarized in the table below by age group and cholesterol level. Create a segmented bar graph which shows the conditional distributions of cholesterol levels for each age group.

Of the 1,606 applicants to a college program,456 were Black or Hispanic,300 were Asian,and 850 were White.Summarize the relative frequency distribution of ethnicity with a sentence or two in the proper context.

Statistics Canada gives the following mortality data for Canada in 2007. Is it reasonable to conclude that cancer or accidents were the cause of approximately 33.8% of deaths in 2002?

The table compares what students at a Canadian college did after graduating in 1992,1998,and 2003. Create a segmented bar graph which shows the conditional distributions of plans for each of the three years.

The Centers for Disease Control in the U.S.A.lists causes of death for individual states in 2002.The mortality data for one state is given. Which of the following displays is/are appropriate for these data? (More than one display may be appropriate. ) I II III

A survey of automobiles parked in student and staff lots at a large university classified the brands by country of origin,as seen in the table. What percent of all the cars surveyed were foreign?

A survey of automobiles parked in student and staff lots at a large university classified the brands by country of origin.The results are listed in the table below. Create a segmented bar graph which shows the conditional distributions of origin for both students and staff.

Students in a Political Science course were asked to describe their politics as "Liberal","Moderate",or "Conservative." The results are listed in the table below. Create a segmented bar graph which shows the conditional distributions by gender for each political category.

A company held a blood pressure screening clinic for its employees.The results are summarized in the table below by age group and blood pressure level. Find the conditional distribution of blood pressure level for employees under 30.