ABSTRACT

A one-way ANOVA examines group differences when there is one independent variable and one dependent variable. However, sometimes we may be interested in a more complex situation where the dependent variable can be explained by several different independent variables. When we conduct an ANOVA with two independent variables it is called a two-way ANOVA (see that? The one-way ANOVA had one IV and the twoway ANOVA has two IVs-makes sense!). In general, once we get past the one-way ANOVA, these types of models are called factorial ANOVAs. Table 11.1 lists the terminology of ANOVAs that we use and then tells how many dependent and independent variables each type of ANOVA has.