UniODA vs. Mann-Whitney U Test: Sunlight and Petal Width

Paul R. Yarnold

Optimal Data Analysis, LLC

The Mann-Whitney U test is a nonparametric statistical test used to compare samples of scores obtained on an ordered variable between two independent groups. In contrast to U the use of UniODA in this application explicitly maximizes model accuracy for each specific sample and hypothesis; explicitly identifies the optimal threshold for discriminating the two groups; yields findings that are invariant over monotonic transformations of the data; and expresses effect strength on an absolute scale ranging from 0 (accuracy expected for the sample and hypothesis by chance) to 100 (perfect accuracy).

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