1. Intro to Stats and Collecting Data

Which of the following best describes the difference between a $\mathrm{population}$ and a $\mathrm{sample}$ in statistics?

Which level of measurement consists of categories only?

Which of the following best describes the difference between a $\mathrm{population}$ and a $\mathrm{sample}$ in statistics?

Suppose a hospital emergency room records the number of patients arriving each hour over a week. Which type of variable best describes the $number$ of patients arriving per hour?

In the context of AP Statistics Unit 3, which of the following best describes the purpose of a scatterplot?

In Exercises 21–28, determine which of the four levels of measurement (nominal, ordinal, interval, ratio) best describes the given data.

College Students In order to better plan for the incoming freshman class, a college dean asks each newly admitted student to identify their likely major (physics, business, math, psychology, engineering, law, etc.).

Which of the following best describes how quantitative information differs from qualitative information in statistics?

Which of the following best describes the difference between $\mathrm{quantitative}$ and $\mathrm{qualitative}$ data?

Body Temperatures Listed below are body temperatures from six different subjects measured at two different times in a day (from Data Set 5 “Body Temperatures” in Appendix B).

a. Are the two sets of data independent or dependent? Explain.

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Which of the following best describes the primary purpose of statistics in research?

In introductory statistics software, what does using the $\mathrm{stats}$ command with a $\mathrm{by}$ clause typically accomplish?

Which of the following is the most appropriate application area for statistical quality control?

Which of the following is true of convenience sampling?

In statistics, what is the term for the entire group that a researcher wants to study or describe?

Which of the following is NOT quantitative data?