Difference between revisions of "Significance tests"

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! comparing >2 groups
 
! comparing >2 groups
 
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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]
 
|-
 
|-
| 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  
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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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== Links ==
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* [[Guide to Excel for statistics#Student t test]]
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[[Category:statistics]]
 
[[Category:statistics]]
 
[[Category:analysis]]
 
[[Category:analysis]]

Latest revision as of 12:32, 27 September 2011

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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]

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