Asked by Jayleen Ailani on Jul 28, 2024
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The Kruskal-Wallis test can be used to test for a difference between two populations. It will produce the same outcome as the two-tail Wilcoxon rank sum test.
Kruskal-Wallis Test
A non-parametric method for testing whether samples originate from the same distribution, used when the ANOVA assumptions are not met.
Wilcoxon Rank Sum Test
A non-parametric test used to compare two independent groups and determine if there are differences in their population median values.
Two Populations
Refers to distinct groups being studied, where comparisons are often made between the statistical properties of these groups.
- Compare and contrast the Friedman test with nonparametric methodologies like the Wilcoxon and Kruskal-Wallis tests, noting differences and similarities.
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Learning Objectives
- Compare and contrast the Friedman test with nonparametric methodologies like the Wilcoxon and Kruskal-Wallis tests, noting differences and similarities.
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