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Two-Way ANOVA
Before you start let’s remember what exactly a 2-Way ANOVA does. A 2-Way ANOVA allows the researcher to assess whether or not a factor (independent variable) on its own influences an outcome (dependent variable). This is similar to One-Way ANOVA, right? Right!
But – with 2-Way ANOVA, a researcher can assess two factors (or independent variables) at the same time. It’s a ‘two-fer’!
Here is an example: physical activity and nutrition - independent of each other - have an effect on weight gain/loss. Both physical activity and nutrition are the independent factors or variables and weight gain/loss is the dependent variable (a way to remember this is that the dependent variable ‘depends’ on the independent variable to determine whether or not it changes…)
But – as we know sometimes these factors can have associations with each other (real world) – and their combined effects (accounting for both independent factors operating on a dependent...