User Guide

4
Chapter 1
GLM Multivariate Model
Figure 1-2
Multivariate Model dialog box
Specify Model. A full factorial model contains all factor main effects, all covariate main
effects, and all factor-by-factor interactions. It does not contain covariate interactions.
Select
Custom to specify only a subset of interactions or to specify factor-by-covariate
interactions. You must indicate all of the terms to be included in the model.
Factors and Covariates. The factors and covariates are listed with (F) for fixed factor and
(C) for covariate.
Model. The model depends on the nature of your data. After selecting Custom, you can
select the main effects and interactions that are of interest in your analysis.
Sum of squares. The method of calculating the sums of squares. For balanced or
unbalanced models with no missing cells, the Type III sum-of-squares method is the
most commonly used type.
Include intercept in model. The intercept is usually included in the model. If you can
assume that the data pass through the origin, you can exclude the intercept.