SME_8e_Ch_19_Section_3

# SME_8e_Ch_19_Section - CHAPTER 19 SECTION 3 NONPARAMETRIC STATISTICS MULTIPLE CHOICE 76 In all applications of the Kruskal-Wallis test the

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1 CHAPTER 19 SECTION 3: NONPARAMETRIC STATISTICS MULTIPLE CHOICE 76. In all applications of the Kruskal-Wallis test, the alternative hypothesis to be tested is always stated as: a. the locations of all k populations are the same. b. the locations of all k populations differ. c. at least two population locations are the same. d. at least two population locations differ. ANS: D PTS: 1 REF: SECTION 19.3 77. The Kruskal-Wallis test is a nonparametric alternative to: a. ANOVA F -test. b. Student- t test for matched pairs. c. Student- t test for independent samples. d. None of these choices. ANS: A PTS: 1 REF: SECTION 19.3 78. The nonparametric counterpart of the parametric one-way analysis of variance F -test is the: a. Kruskal-Wallis test. b. Friedman test. c. Wilcoxon rank sum test. d. Wilcoxon signed rank sum test. ANS: A PTS: 1 REF: SECTION 19.3 79. In a Kruskal-Wallis test, there are four samples and the value of the test statistic is calculated as H = 8.79. The most accurate statement that can be made about the p -value is that: a. it is greater than 0.10. b. it is greater than 0.05 but smaller than 0.10. c. it is greater than 0.05. d. it is greater than 0.025 but smaller than 0.05. ANS: D PTS: 1 REF: SECTION 19.3 80. Suppose there is interest in comparing the locations of response times for three independent groups learning new specific task. The appropriate nonparametric procedure is the: a. Wilcoxon rank sum test. b. Wilcoxon signed rank test. c. Kruskal-Wallis test. d. None of these choices. ANS: C PTS: 1 REF: SECTION 19.3

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2 81. Which of the following distributions approximate Kruskal-Wallis test statistic H when the problem objective is to compare k populations ( k > 2) where the sample sizes are greater than or equal to 5? a. normal distribution b. chi-squared distribution c. Student t -distribution d. None of these choices. ANS: B PTS: 1 REF: SECTION 19.3 82. The Kruskal-Wallis test statistic can be approximated by a chi-squared distribution with k - 1 degrees of freedom (where k is the number of populations) whenever the sample sizes are all greater than or equal to: a. 5 b. 10 c. 30 d. None of these choices. ANS: A PTS: 1 REF: SECTION 19.3 83. The Kruskal-Wallis test is always: a. one-tail. b. two-tail. c. used with one sample. d.
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## This note was uploaded on 09/28/2010 for the course FINOPMGT 250 taught by Professor Kumar during the Spring '10 term at University of Massachusetts Boston.

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SME_8e_Ch_19_Section - CHAPTER 19 SECTION 3 NONPARAMETRIC STATISTICS MULTIPLE CHOICE 76 In all applications of the Kruskal-Wallis test the

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