Exam 2: Displaying and Describing Categorical Data

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 White students were accepted?

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,and a graphical display of the conditional distributions of sex among the three categories of politics is given. The political science instructor states that sex and politics are independent.Is this an accurate statement? Explain.

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. Create a bar chart for these data.

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 for each kind of surgery?

At a university in the U.S.A. ,the incoming freshman were surveyed about their chosen majors.The university organized the data by placing the majors into the appropriate colleges.The table displays the results for males and females by colleges.A graphical display of the conditional distributions of colleges by gender is given. Do you think that the college the freshmen will be entering is independent of the gender of the student? Explain.

A company held a cholesterol screening clinic for its employees.The results are summarized in the table below by age group and cholesterol level.A graphical display of the conditional distributions of cholesterol levels by age is given. Does this prove that aging causes increased cholesterol levels? Explain.

Students in a Political Science course were asked to describe their politics as "Liberal","Moderate",or "Conservative." Here are the results: Produce a pie chart that shows the marginal distribution of politics in the class.

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. What percent of adults polled did not express interest in any of these activities?

Students in a political science course were asked to describe their politics as "Liberal","Moderate",or "Conservative." Here are the results: What percent of the females in the class consider themselves to be "Liberal"?

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 marginal distribution of blood pressure level.

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 students?

An article in a magazine examined the graduate admissions process at a university for evidence of gender bias.The table below shows the number of applicants accepted to each of four graduate programs. After reading this article,a classmate claims that there is gender bias because the university clearly accepted more males than females.Do you agree with your classmate? Explain.

A newspaper surveyed its subscribers as to which section of the paper they read first.The results are listed below. Is it reasonable to conclude that 39.1% of the paper's subscribers read the business or sports sections first?

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 the foreign cars were owned by students?

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 all applicants were Black or Hispanic?

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 did it actually rain?

Students in a political science course were asked to describe their politics as "Liberal","Moderate",or "Conservative." Here are the results: What percent of the class considers themselves to be "Liberal"?

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 the North American cars were owned by staff?

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. What percent of the time was the forecast correct?

Students in a political science course were asked to describe their politics as "Liberal","Moderate",or "Conservative." Here are the results: What percent of all students in the class are males who consider themselves to be "Liberal"?