The Mann-Whitney U Test, also known as the Wilcoxon Rank Sum Test, is a non-parametric statistical test used to compare two samples or groups. The Mann-Whitney U Test assesses whether two sampled ...

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The Canadian Journal of Statistics / La Revue Canadienne de Statistique, Vol. 27, No. 4 (Dec., 1999), pp. 863-874 (12 pages) New aligned-rank test procedures for the composite null hypothesis of no ...

In the Two-Sample Test for Proportions task, you can determine whether two probabilities are the same. The data analyzed in this example are taken from a study measuring the accuracy of two computer ...

In the Two-Sample Test for Variances task, you can test whether two variables have different variances, or, if you have a single variable that contains values for two groups, you can determine whether ...

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