Statistical Techniques in Business and Economics
Statistical Techniques in Business and Economics
18th Edition
ISBN: 9781260579611
Author: Douglas Lind; William Marchal; Samuel Wathen
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 16, Problem 16E
To determine

State the conditions that are necessary to use Kruskal–Wallis test instead of Wilcoxon rank-sum test.

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suppose you and a friend each take different random samples of data pairs (x,y) from the same popuation. Assumethe samples are the same size. Based on your samples, you compute r=0.83. Based on her sample, your friend computes r=0.79. Is your friends value for r wrong?
We use the Wilcoxon signed-rank test to test the hypothesis that there is no difference between the Before and After with this data: Questions What is the sum of rank for before and after ?
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