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# Ch02_Sect01 TB.doc

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CHAPTER 2 SECTION 1: GRAPHICAL AND TABULAR DESCRIPTIVE TECHNIQUES MULTIPLE CHOICE 1. The classification of student major (accounting, economics, management, marketing, other) is an example of a(n) a. nominal random variable. b. interval random variable. c. continuous random variable. d. parameter. ANS: A PTS: 1 REF: SECTION 2.1 2. The classification of student class designation (freshman, sophomore, junior, senior) is an example of a(n) a. nominal random variable. b. interval random variable. c. ordinal random variable. d. a parameter. ANS: C PTS: 1 REF: SECTION 2.1 3. A researcher wishes to estimate the textbook costs of first-year students at Ferris State University. To do so, he recorded the textbook cost of 200 first-year students and found that their average textbook cost was \$275 per semester. The variable of interest to the researcher is a. textbook cost. b. class rank. c. number of students. d. name of university. ANS: A PTS: 1 REF: SECTION 2.1 4. All calculations are permitted on what type of data? a. Interval data b. Nominal data c. Ordinal data d. All of these choices are true. ANS: A PTS: 1 REF: SECTION 2.1 5. Values must represent ordered rankings for what type of data? a. Interval data b. Nominal data c. Ordinal data d. None of these choices. ANS: C PTS: 1 REF: SECTION 2.1 This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold, copied, or distributed without the prior consent of the publisher. 6. For what type of data are frequencies the only calculations that can be done? a. Interval data b. Nominal data c. Ordinal data d. None of these choices. ANS: B PTS: 1 REF: SECTION 2.1 7. For which type of data are the values arbitrary numbers任任任? a. Interval data b. Nominal data c. Ordinal data d. None of these choices. ANS: B PTS: 1 REF: SECTION 2.1 TRUE/FALSE 8. Your gender is a nominal variable. ANS: T PTS: 1 REF: SECTION 2.1 9. Your final grade in a course (A, B, C, D, E) is a nominal variable. ANS: F PTS: 1 REF: SECTION 2.1 10. Your age is an interval variable. ANS: T PTS: 1 REF: SECTION 2.1 11. Your age group (1-10; 11-20; 21-30; 31-40; etc.) is an interval variable. ANS: F PTS: 1 REF: SECTION 2.1 12. Whether or not you are over the age of 21 is a nominal variable. ANS: T PTS: 1 REF: SECTION 2.1 13. The values of quantitative data are categories. ANS: F PTS: 1 REF: SECTION 2.1 14. Interval data, such as heights, weights, and incomes, are also referred to as quantitative or numerical data. ANS: T PTS: 1 REF: SECTION 2.1 15. Nominal data are also called qualitative or categorical data. ANS: T PTS: 1 REF: SECTION 2.1 This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold, copied, or distributed without the prior consent of the publisher. 16. A variable is some characteristic of a population or sample. ANS: T PTS: 1 REF: SECTION 2.1 17. With nominal data, there is one and only one way the possible values can be ordered. ANS: F PTS: 1 REF: SECTION 2.1 18. You cannot calculate and interpret differences between numbers assigned to nominal data. ANS: T PTS: 1 REF: SECTION 2.1 19. All calculations are permitted on interval data. ANS: T PTS: 1 REF: SECTION 2.1 20. Interval data may be treated as ordinal or nominal. ANS: T PTS: 1 REF: SECTION 2.1 COMPLETION 21. The Dean of Students conducted a survey of students on campus. A student's SAT score in mathematics is an example of a(n) ____________________ variable. ANS: interval quantitative numerical PTS: 1 REF: SECTION 2.1 22. The Dean of Students conducted a survey on campus. The gender of each student is an example of a(n) ____________________ variable. ANS: nominal categorical qualitative PTS: 1 REF: SECTION 2.1 23. The Dean of Students conducted a survey on campus. Class rank (Freshman, Sophomore, Junior, and Senior) is an example of a(n) ____________________ variable. ANS: ordinal PTS: 1 REF: SECTION 2.1 24. The final grade received in an English course (A, B, C, D, or F) is an example of a(n) ____________________ variable. This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold, copied, or distributed without the prior consent of the publisher. ANS: nominal categorical qualitative PTS: 1 REF: SECTION 2.1 25. In purchasing a used automobile, there are a number of variables to consider. The age of the car is an example of a(n) ____________________ variable. ANS: i
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