Monday, March 29, 2010

Non-parametric tests



Chi-square test of independence (two variables or groupings). The differences between groups are tested. You test the Ho and either reject or fail to reject Ho. No association between groups is called independence.





(SPSS, Analyze, Descriptive Statistics, Cross-tab, Statistics, Chi-square)








Chi-square test of goodness of fit (one variable or group). The differences between the group and your expectations (chance) are tested. You test the same way as the test of independence. Expectations of Ho are equal proporation across all choices (chance).



(SPSS, Analyze, Nonparametric Tests, Chi-square)







Chi-square test of significance of a proportion (compare 2 frequencies only like "yes" and "no"). Small case of goodness of fit test.



Chi-square homework set in blackboard.

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