Posts tagged ‘ANOVA’

Effect size for Analysis of Variance (ANOVA)

Effect size, in a nutshell, is a value which allows you to see how much your independent variable (IV) has affected the dependent variable (DV) in an experimental study. In other words, it looks at how much variance in your DV was a result of the IV. You can only calculate an effect size after conducting an appropriate statistical test for significance. This post will look at effect size with ANOVA (ANalysis Of VAriables), which is not the same as other tests (like a t-test). When using effect size with ANOVA, we use η² (Eta squared), rather than Cohen’s d with a t-test, for example.

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Continue Reading October 31, 2010 at 5:00 pm 17 comments


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