Factorial ANOVA
Factorial ANOVA Factorial ANOVA Adding Variables to ANOVA - Factorial ANOVA While One-way Analysis of Variance is a powerful tool, it’s rare within social science (and practical matters) that we’re interested only in the dfferences across a single dimension (e.g. differences in only race). More often, we have multiple dimensions that we’re interested in testing, and frequently, we’re interested not just in what we would term their direct effects, but also how those variables interact . The good news is that ANOVA is very flexible, and can handle multiple variables. While it can (technically) handle all kinds of levels of measurement, the version of ANOVA we’re going to work with in this lesson is Factorial ANOVA. That is, ANOVA by more than one factor . This both helps to simplify the explanation (if we used interval/ratio level data, we’d be moving into something caled ANCOVA), but it also will help us understa...