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ANOVA: Analysis of Variance

From OPOSSEM


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  • Learn a technique that psychologists use because regression with dummy variables would be too easy.

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Psychologists tend to use complicated experimental designs with multiple treatment groups, often with overlapping treatments. So they use a technique called analysis of variance (often abbreviated as ANOVA) when they want to compare an outcome variable across three or more groups. Any sensible person will tell you that you can use regression with dummy variables instead and get the same answers. But ANOVA sounds cooler so they use it instead.

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