Question

Refer to Exercise 8.40. What happens to the Kruskal-Wallis test if you replace the value 9.8 by 15.8 ? Might there be a reason to run both a Kruskal-Wallis test and an analysis of variance? Justify your answer.

   Refer to Exercise 8.40. What happens to the Kruskal-Wallis test if you replace the value 9.8 by 15.8 ? Might there be a reason to run both a Kruskal-Wallis test and an analysis of variance? Justify your answer.
 
An Introduction to Statistical Methods and Data Analysis
An Introduction to Statistical Methods and Data Analysis
R. Lyman Ott,… 7th Edition
Chapter 8, Problem 41 ↓

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The Kruskal-Wallis test is a non-parametric method used to determine if there are statistically significant differences between the medians of three or more independent groups. It is an alternative to one-way ANOVA when the assumptions of normality and homogeneity  Show more…

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Refer to Exercise 8.40. What happens to the Kruskal-Wallis test if you replace the value 9.8 by 15.8 ? Might there be a reason to run both a Kruskal-Wallis test and an analysis of variance? Justify your answer.
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