Significance tests

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data type	comparing 2 groups	comparing >2 groups
parametric [1] (equal variance [2])	Student's t-test [3]	ANOVA [4]
parametric (different variances)	Welch t-test [5]	Welch ANOVA
nonparametric [6]	rank sum test (Mann-Whitney) [7]	Kruskal-Wallis test [8]

Links

• Guide to Excel for statistics#Student t test