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The Mann-Whitney U-test is used to test whether two independent samples of observations are drawn from the same or identical distributions. An advantage with this test is that the two samples under consideration do not necessarily need to have the same number of observations or instances.
Wilcoxon test (wÉªlËkÉksÉn ) noun. a. Also called : Wilcoxon matched-pairs signed-ranks test. a statistical test for the relative size of the scores of the same or matched subjects under two experimental conditions by comparing the distributions for positive and negative differences of the ranks of their absolute values. b. Wilcoxon Mann-Whitney test.