The View Model dialog box displays information to help you determine whether you are using the correct model. Minitab enables this dialog box only if you select Fitted means for a 2-level factorial design.
For mixture designs, you do not need to fit the model first because the cube plot displays only data means. This dialog box is not available for mixture designs.
Minitab automatically stores the most recent model for a response variable each time you run the analysis. Any model that you previously fit for that response variable is overwritten. Therefore, verify that the current model is the correct model.
Cube Plot for a 2-level factorial design uses a model that you fit and that Minitab automatically stored in your worksheet to calculate the fitted means. You must fit a model before you can create a cube plot with fitted means. Cube plots of fitted means are accurate only if the model represents the true relationships between the variables.
For more information, go to Stored model overview.