Stat > DOE > Factorial > Analyze Factorial Design > Terms
Allows you to specify which terms to include in the model.
Include terms in the model up through order: Use this drop-down list to quickly set up a model with a specified order. Choose the maximum order for terms to include in the model. For example, if you choose 2, the terms change in the following ways:
Note |
If you define a custom factorial design, Minitab does not check which interactions are confounded. All interactions up to the specified order display in Selected Terms. Minitab removes confounded terms from the model later, when you analyze the model. |
Available Terms: Shows all terms that are not included in the fitted model. By default, hard-to-change factors for split-plot designs include "[HTC]" in the column title.
Selected Terms: When Minitab fits the model, it includes terms shown in Selected Terms. By default, hard-to-change factors for split-plot designs include "[HTC]" in the column title.
Include blocks in the model: Check to include blocks in the model. Minitab enables this checkbox if multiple values are in the block column for the design.
Include center points in the model: Check to include center points as a term in the model. Minitab enables this checkbox if zeroes are in the CenterPt column of the worksheet. Center points are not available in split-plot designs.