Homogeneity-of-Slopes Model in GLM, GLZ, and PLS

Select Homogeneity-of-slopes model as the Type of analysis on the GLM Startup Panel - Quick tab to specify analysis of covariance (ANCOVA or MANCOVA) designs, that include all interactions between the continuous predictors (covariates) and categorical predictors variables (see also Homogeneity of Slopes). In the subsequent Quick Specs dialog box, you can then specify one or more categorical predictor variables, one or more continuous predictor variables (covariates), and one or more dependent variables (ANCOVA or MANCOVA). By default STATISTICA will evaluate a design that includes interaction effects between all continuous predictors and all main effects and interactions for the factorial design (for the categorical predictors). If any of those interaction effects is statistically significant, the homogeneity of slopes hypothesis can be rejected. For more information, refer to the Introductory Overview and the GLM - Index.