Kruskal-Wallis Test: k=4

The Kruskal-Wallis procedure is a nonparametric test for the significance of the difference among the distributions of several independent samples, A, B, etc., of sizes na, nb, etc., respectively. As the page opens, you will be prompted to enter the sizes of your several samples. If you are starting out with raw (unranked) data, the necessary rank-ordering will be performed automatically.

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