General Analysis of Variance

Select menu: Stats | Analysis of Variance | General

General Analysis of Variance is the most general of the ANOVA menus, covering the full range of designs analysed by the ANOVA directive.

After you have imported your data, from the menu select
Stats | Analysis of Variance | General.
From the Design dropdown list select General analysis of variance.
Fill in the fields as required then click Run.

You can set additional Options then after running, you can save the results by clicking Save.

Available data

This lists data structures appropriate to the current input field. It lists either factors for use in specifying the treatment and block structure, or variates for specifying the data and additional covariates. The contents will change as you move from one field to the next. The contents of this field will change as you move from one field to the next. You can double-click a name to copy it to the current input field.

Design

Use this to switch to other, more specific types of designs.

Y-variate

Set this to the variate containing the data values.

Treatment structure

Specify the treatment terms to be fitted by entering a model formula.

Contrasts

Opens a menu that lets you specify one or more treatment contrasts that you wish to analyse.

Block structure

Define the underlying structure of the design by entering a model formula. This can be left blank with unstructured (completely randomized) designs.

Interactions

Controls the level of interactions to be fitted. You can specify All interactions, No interactions, (i.e. main effects.), or specify the level of interaction (that is, set a limit on the maximum number of factors in the treatment terms that are fitted).

Operators

This provides a quick way of entering operators in the treatment and block model formulas. Double-click the required symbol to copy it to the current input field. You can also type in operators directly. See model formula for a description of each.

Covariates

Select the check box if you want to perform analysis of covariance. The adjacent field will become enabled to let you supply a list of the covariates for the analysis. If there is more than one, you can separate their names with spaces or commas.