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SME_8e_Ch_19_Section_1

# SME_8e_Ch_19_Section_1 - CHAPTER 19 SECTION 1 NONPARAMETRIC...

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1 CHAPTER 19 SECTION 1: NONPARAMETRIC STATISTICS MULTIPLE CHOICE 1. Consider the following data set: 14, 14, 15, 16, 18, 19, 19, 20, 21, 22, 23, 25, 25, 25, 25, and 28. The rank assigned to the four observations of value 25 is: a. 12 b. 12.5 c. 13 d. 13.5 ANS: D PTS: 1 REF: SECTION 19.1 2. To apply the Wilcoxon rank sum test to determine whether the location of population 1 is different from the location of population 2, the samples must be: a. drawn from normal populations. b. drawn from matched pairs experiment. c. independent. d. larger than 30. ANS: C PTS: 1 REF: SECTION 19.1 3. The Wilcoxon rank sum test statistic T is approximately normally distributed whenever the sample sizes are larger than: 4. Statistical methods that require few assumptions, if any, about the population distribution are known as: 5. The nonparametric tests discussed in your book (Wilcoxon rank sum test, sign test, Wilcoxon signed rank sum test, Kruskal-Wallis test, and Friedman test) all require that the probability distributions be:

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2 6. Statistical methods that require, among other assumptions, that the populations be normally distributed are known as: a. distribution-free techniques. b. nonparametric techniques. c. parametric techniques. d. both a and b are correct. ANS: C PTS: 1 REF: SECTION 19.1 7. In a Wilcoxon rank sum test, the two sample sizes are 4 and 6, and the value of the Wilcoxon test statistic is T = 20. If the test is a two-tail and the level of significance is α = 0.05, then:
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