Main Effects ANOVA in GRM

Select Main effects ANOVA on the General Regression Models Startup Panel - Quick tab to specify main effects only ANOVA or MANOVA designs. In the subsequent Quick specs dialog box, specify one or more categorical predictor variables. Statistica will estimate and evaluate the main-effects-only model. Those types of models are frequently used in industrial experimentation, to screen large numbers of factors in highly fractionalized designs (e.g., 2-level screening designs; see Experimental Design). For more information, refer to the Introductory Overview and GRM - Index.