Fit the linear model with interaction: > lm.out=lm(Words ~ Process + Age + Process:Age) > Anova(lm.out,type="III") Anova Table (Type III tests) Response: Words Sum Sq Df F value Pr(>F) (Intercept) 13479.2 1 1679.5361 < 2.2e-16 *** Process 1514.9 4 47.1911 < 2.2e-16 *** Age 240.2 1 29.9356 3.981e-07 *** Process:Age 190.3 4 5.9279 0.0002793 ***

### F1bb sheepadoodle

Dec 23, 2019 · At its core, an ANOVA will provide much of the same information that is provided in a simple linear regression (i.e. OLS). However, an ANOVA can be seen as an alternative interface through which this information can be accessed. Different scientific domains might have different preferences, which generally imply which test you should be using.