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Uploaded on Dec 5, 2011
I demonstrate how perform a linear contrast analysis based on means in a between-subjects ANOVA context. I do so using three different ways, each of which provides useful information. In this example, the ANOVA does not yield a statistically significant effect, but the linear contrast analysis does. I demonstrate how to get an adjustment in the case where the homogeneity of variance assumption does not hold. Finally, I show how to get the estimate of effect size (eta squared) for the linear contrast analysis.