Recall the GLM Univariate dialog box.
Click Model.
Select Full factorial as the
model type
Click Continue.
Click Options in the
GLM Univariate dialog box.
Select Descriptive statistics,
Homogeneity tests,
Spread vs. level plot, and
Parameter estimates in the
Display group.
Click Continue.
Click OK in the
GLM Univariate dialog box.
These selections produce an analysis of covariance
to assess the effect of program participation, controlling for
salary before entering the program.