Select menu: Stats | Regression Analysis | Screening Tests | Linear Models
Use this to calculate marginal and conditional tests for all terms in a linear model. It also performs pooled testing of all main effects, of all 2-factor interactions, etc.
- After you have imported your data, from the menu select
Stats | Regression Analysis | Screening Tests | Linear Models.
- Fill in the fields as required then click Run.
This lists data structures appropriate to the current input field. The contents will change as you move from one field to the next. Double-click a name to copy it to the current input field or type the name.
Specify a response variate containing the data.
Model formula or list of explanatory data
Specifies the model candidate terms in the fitted model, which may be set using a model formula or using a list of terms separated by commas.
Terms always included in the model
It is sometimes desirable to include specific terms in every model. Such terms may be specified by in this box, which may be set using a model formula or using a list of terms separated by commas.
Factorial limit on model terms
You can control the factorial limit on model terms to be generated when you use in model-formula operators like ‘*’.
This provides a quick way of entering operators in the model terms formula. Double-click on 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.