Customized (Pooled) Error Term

Select the Ignore some effects check box or click the Effects to ignore button on the Model tab of the Analysis of a Central Composite (Response Surface) Experiment dialog, D- and A-Optimal Designs dialog, Analysis of a Mixture Experiment dialog, Analysis of an Experiment with Two-Level Factors dialog, Analysis of an Experiment with Three-Level Factors dialog, Analysis of an Experiment with Two- and Three-Level Factors dialog, or Analysis of a Screening Experiment with Two-Level Factors dialog to display the Customized (Pooled) Error Term dialog.

Effects
The Effects box contains a list of all factor effects and interactions in the current model. Highlight the factors or interactions that you want to ignore, that is, that you want to pool into the error term.
OK
Click the OK button to accept the selections made in the Customized (Pooled) Error Term dialog and return to the previous dialog.
Cancel
Click the Cancel button to return to the previous dialog. Any selections made in the Customized (Pooled) Error Term dialog will be ignored.