# Significance tests

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| Kruskal-Wallis test [http://en.wikipedia.org/wiki/Kruskal-Wallis_test] | | Kruskal-Wallis test [http://en.wikipedia.org/wiki/Kruskal-Wallis_test] | ||

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## Revision as of 15:27, 27 September 2011

back to stats portal |

data type | comparing 2 groups | comparing >2 groups |
---|---|---|

parametric [1] (equal variance) | Student's t-test [2] | ANOVA [3] |

parametric (different variances [4]) | Welch t-test [5] | Welch ANOVA |

nonparametric [6] | rank sum test (Mann-Whitney) [7] | Kruskal-Wallis test [8] |