Tests for paired or multiple measurements of the same variable

These techniques are used when you have collected the same variable on the same people at different time points. Example: Test the difference in cholesterol after a trial of a specific margarine by measuring cholesterol before and after the trial on each participant. Note:If the assumptions for the t-test or repeated measures ANOVA have not been met, use the equivalent non-parametric test.

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For more information about when to use each test, click on the name of the test.

Test	SPSS	R Sheet	R Script	Jamovi	SAS	Mathematical Understanding
Paired t-test
Repeated measures ANOVA
Wilcoxon signed rank (non-parametric paired t-test equivalent)
Friedman test (Non-parametric repeated measures ANOVA)