Statistical Modeling Chapter 2

The table shows whether students in an introductory statistics class like dogs and/or cats. What percentage of students in the class like both cats and dogs?

• 64%

• 90%

• 58%

• 65%

The table shows whether students in an introductory statistics class like dogs and/or cats. What percentage of students who like cats also like dogs?

• 64%

• 90%

• 58%

• 65%

The table shows how a company’s employees commute to work. What percentage of employees takes the bus?

• 5%

• 16%

• 22%

• 30%

One day a store tracked the way shoppers paid for their purchases. Their data are summarized in the table. What do the numbers 18, 10, 12 represent?

• The marginal distribution of method of payment

• The marginal distribution of gender

• The conditional distribution of gender for shoppers who paid cash

• The conditional distribution of payment method for males

If you were to create a pie chart to represent the responses of females only, which of the following would be the correct way to label the chart?

• Label each section with the response category and its percentage of the total female responses

• Label each section with the response category only

• Label the chart with the total number of respondents only

• Do not label the chart at all

Which of the following best describes the purpose of sketching a pie chart for the female responses?

• To visually compare the proportions of each response category among females

• To calculate the total number of respondents

• To list the names of all respondents

• To show the responses of males only

Which section of the pie chart would represent approximately 31% of the responses?

• Game

• Commercials

• Won’t watch

• Total

If you were to create a pie chart to represent the responses of the females only, what would be the largest section?

• Game

• Commercials

• Won’t watch

• All sections would be equal

Which section of the pie chart would be the largest for females?

• Game

• Commercials

• Won't watch

• All sections are equal

Which of the following would be the best way to visually represent the female preferences for the Super Bowl?

• Pie chart labeled with Game, Commercials, and Won’t watch percentages for females

• Bar graph showing male preferences only

• Line graph of total respondents over time

• Scatter plot of age versus preference