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The Wilcoxon Mann Whitney test is a common nonparametric test when comparing two samples with non-normal distributions. It is a powerful substitution of two-sample t-test.
It is used to test whether the two samples have identical distribution or not.
This test is also valid when the observations in a sample of data are ranks, that is, ordinary data.
To perform a Mann-Whitney test:
|Note: Origin provides both asymptotic and exact p-value as result for Mann-Whitney test.|
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