Stat > Quality Tools > Gage Study > Gage R&R Study (Expanded) > Terms
Complete the following steps to specify which terms to include in the model.
Available terms lists all terms that are estimable but are not included in the fitted model. Selected terms lists all terms that Minitab includes when it fits the model.
In Include terms in the model up through order, select the maximum order of terms that you want to include.
1: Include only the factors in the selected terms.
2: Include only the factors and the two-way interactions in the selected terms.
3: Include the factors, the two-way interactions, and the three-way interactions in the selected terms.
4: Include the factors, the two-way interactions, the three-way interactions, and the four-way interactions in the selected terms.
(Optional) Use the arrows to add or remove terms to the model. The single arrows add or remove individual terms and the double arrows add or remove all the terms.
(Optional) Click the Part-to-Part Variation button to specify the factors to use to calculate the part-to-part variation estimate. Usually, you specify the fixed factors. You cannot include the operator term.