GraphPad Statistics Guide

Running a t test (or related nonparametric test)

Running a t test (or related nonparametric test)

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Running a t test (or related nonparametric test)

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T tests, and related nonparametric tests compare two sets of measurements (data expressed using an interval or ratio scale). If you have three or more groups, use one-way ANOVA (and related nonparametric tests) instead. Different tests are used to compare two proportions, or two survival curves.