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Final_KEY_2011

Final_KEY_2011 - Name_KEY 6 May 2011 IE330 Spring 2011...

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Name: ________________KEY___________________ 1 6 May 2011 IE330 Spring 2011 Final Exam Part 1: Mandatory (Chapters 15 and 16) No calculators, closed book, closed notes. Do not tear off any pages.
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Name: ________________KEY___________________ 2 CHAPTER 15 - Multiple choice 1. (4 points) Concerning handling values that are equal to the hypothesized value in nonparametric tests, which of the following are true? (Select all that are true.) a. In a sign test, ties with the hypothesized median should be discarded. b. In a Wilcoxon signed-rank test, ties with the hypothesized median should be given the average of the ranks they would have if they were slightly different. c. In a Kruskal-Wallis test, ties with the hypothesized value are discarded. d. In a Wilcoxon rank-sum test, ties with the hypothesized value are given the average of the ranks they would have if they were slightly different. e. None of the above is true. 2. (4 points) Which of the following are assumptions of the Kruskal-Wallis test? (Select all that are true.) 3. (4 points) Which of the following would be a case where a non-parametric test should not be used? (Select all that are true.) 4. (2 points) I have a distribution that is highly skewed, with several (valid) outliers out on one tail of the distribution. What is the best test to use to determine if the median of that distribution is equal to 5.2? (Choose the best answer.) 5. (4 points) I have collected paired data and intended to do a paired t-test on the resulting data. However, in inspecting the data I find that the assumptions of the paired t-test have not been met. Which of the following tests could I use instead? (Choose all that could be used.) a. Contingency table b. Runs test c. Rank transformation followed by a paired t-test d. Wilcoxon signed-rank test e. None of the above
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