Section 3
Tests for Ranked Data
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Boundless Statistics
Statistics
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When to Use These Tests
"Ranking" refers to the data transformation in which numerical or ordinal values are replaced by their rank when the data are sorted.
Mann-Whitney U-Test
The Mann–Whitney
Wilcoxon t-Test
The Wilcoxon
Kruskal-Wallis H-Test
The Kruskal–Wallis one-way analysis of variance by ranks is a non-parametric method for testing whether samples originate from the same distribution.