Significance tests

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! comparing >2 groups
! comparing >2 groups
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|-
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| parametric [http://en.wikipedia.org/wiki/Parametric_statistics] (equal variance)
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| parametric [http://en.wikipedia.org/wiki/Parametric_statistics] (equal variance [http://en.wikipedia.org/wiki/Variance])
| Student's t-test [http://en.wikipedia.org/wiki/Student%27s_t-test]
| Student's t-test [http://en.wikipedia.org/wiki/Student%27s_t-test]
| ANOVA [http://en.wikipedia.org/wiki/Analysis_of_variance]
| ANOVA [http://en.wikipedia.org/wiki/Analysis_of_variance]
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|-
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| parametric (different variances [http://en.wikipedia.org/wiki/Variance])
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| parametric (different variances)
| Welch t-test [http://en.wikipedia.org/wiki/Welch%27s_t_test]
| Welch t-test [http://en.wikipedia.org/wiki/Welch%27s_t_test]
| Welch ANOVA  
| Welch ANOVA  

Revision as of 16:28, 27 September 2011

back to stats portal
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]
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