GRM - Methods for Specifying Designs
STATISTICA General Regression Models (GRM) and General Linear Models (GLM) (as well as Generalized Linear/Nonlinear Models (GLZ), General Partial Least Squares Models (PLS), General Discriminant Analysis (GDA), and ANOVA) provide three alternate methods for specifying designs: Via Analysis Wizards, Quick Specs dialog boxes, and Analysis Syntax. Note that if you choose one of the first two user interface methods, you can always switch to the GRM Analysis Syntax Editor where the GRM syntax describing your current design (as specified via Analysis Wizards or Quick Specs dialog boxes) will be displayed for further editing; the GRM Analysis Syntax Editor also provides options for saving the design syntax in a text file for repeated use.
Analysis wizards. The simplest method for specifying designs is via Analysis Wizards. If you select this Specification method from the GRM Startup Panel - Quick tab, STATISTICA will guide you through a series of dialog boxes for specifying the desired type of design. Via this user-interface, you can specify all univariate and multivariate regression designs.
- Quick specs dialog
- This user interface will present a Quick Specs dialog box tailored to the specific design selected in the Type of analysis list box on the GRM Startup Panel - Quick tab. For example, if you chose a Multiple regression design from the GRM Startup Panel - Quick tab, the Quick Specs dialog box will provide options for selecting the dependent variables and a list of continuous predictor variables (independent variables or covariates); if you selected a Factorial ANOVA from the GRM Startup Panel - Quick tab, the Quick Specs dialog box will provide options for selecting the dependent variables and a list of categorical predictor variables (factors, or grouping variables), and so on. If you have some experience with using other STATISTICA modules, this user interface will appear most familiar to you.
- Syntax editor dialog
- This user interface is used to type in directly the command syntax for specifying any type of regression or experimental design using the GRM syntax conventions in the GRM Analysis Syntax Editor. Note that the GRM syntax conventions are essentially identical to the GLM syntax conventions (see General Linear Models (GLM), with only a few additions and omissions relating to stepwise and best subset analyses.
- Specification methods and dialogs
- For a detailed explanation of each method or dialog, click on the appropriate link.
GRM Startup Panel - Quick tab GRM Analysis Syntax Editor Quick Specs dialog GRM Syntax Quick Specs - Quick tab GRM Syntax Examples Quick Specs - Options tab GRM Between Effects See also GRM - Index.