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Chapter 1: Q.57 (page 53)

For the following exercises, identify the type of data that would be used to describe a response (quantitative discrete, quantitative continuous, or qualitative), and give an example of the data. number of students enrolled at Evergreen Valley College.

Short Answer

Expert verified

A quantitative discrete type of data is the number of students enrolled at Evergreen Valley College.Example: number of students enrolled at Evergreen Valley College is 1449.

Step by step solution

01

To determine

The mentioned line also gives an example of such type of data, whether quantitative discrete, quantitative continuous, or qualitative.

02

Explanation

We can watch quantitative discrete data in a real line at regular intervals, or we can view data in simply integer format. We must use an integer data point to observe the number of students enrolled at Evergreen Valley College; it cannot be a decimal. It can't be 1252.45 because the number of students isn't a fraction. As a result, the right response is quantitative discrete.

03

Conclusion

The number of students enrolled at Evergreen Valley College must be collected as an integer, which means it must be a whole number that cannot be decimal, making the answer quantitative discrete.

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Most popular questions from this chapter

“Number of times per week” is what type of data?

a. qualitative(categorical); b. quantitative discrete; c. quantitative continuous

How much time does it take to travel to work? Table 1.36shows the mean commute time by state for workers at least 16years old who are not working at home. Find the mean travel time, and round off the answer properly.

The instructor’s sample produces a mean number of days absent of 3.5 days. This value is an example of a:

a. parameter.

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A “random survey” was conducted of 3,274people of the “microprocessor generation” (people born since 1971, the year the microprocessor was invented). It was reported that 48% of those individuals surveyed stated that if they had $2,000to spend, they would use it for computer equipment. Also, 66%of those surveyed considered themselves relatively savvy computer users.

a. Do you consider the sample size large enough for a study of this type? Why or why not?

b. Based on your “gut feeling,” do you believe the percents accurately reflect the U.S. population for those individuals born since 1971? If not, do you think the percents of the population are actually higher or lower than the sample statistics? Why? Additional information: The survey, reported by Intel Corporation, was filled out by individuals who visited the Los Angeles Convention Center to see the Smithsonian Institute's road show called “America’s Smithsonian.”

c. With this additional information, do you feel that all demographic and ethnic groups were equally represented at the event? Why or why not?

d. With the additional information, comment on how accurately you think the sample statistics reflect the population parameters

Name the sampling method used in each of the following situations:

a. A woman in the airport is handing out questionnaires to travelers asking them to evaluate the airport’s service. She does not ask travelers who are hurrying through the airport with their hands full of luggage, but instead asks all travelers who are sitting near gates and not taking naps while they wait.

b. A teacher wants to know if her students are doing homework, so she randomly selects rows two and five and then calls on all students in row two and all students in row five to present the solutions to homework problems to the class.

c. The marketing manager for an electronics chain store wants information about the ages of its customers. Over the next two weeks, at each store location, 100randomly selected customers are given questionnaires to fill out asking for information about age, as well as about other variables of interest.

d. The librarian at a public library wants to determine what proportion of the library users are children. The librarian has a tally sheet on which she marks whether books are checked out by an adult or a child. She records this data for every fourth patron who checks out books.

e. A political party wants to know the reaction of voters to a debate between the candidates. The day after the debate, the party’s polling staff calls 1,200randomly selected phone numbers. If a registered voter answers the phone or is available to come to the phone, that registered voter is asked whom he or she intends to vote for and whether the debate changed his or her opinion of the candidates.
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