proc glm;
class drug disease;=drug disease drug*disease;
model y run;
linear-models
Getting Started
To demonstrate the various types of sums of squares, we’ll create a data frame called df_disease
taken from the SAS documentation.
The Model
For this example, we’re testing for a significant difference in stem_length
using ANOVA.
Sums of Squares Tables
SAS has four types of sums of squares calculations. To get these calculations, the sum of squares option needs to be added (/ ss1 ss2 ss3 ss4
) to the model statement.
proc glm;
class drug disease;=drug disease drug*disease / ss1 ss2 ss3 ss4;
model y run;