To perform this analysis in Minitab, go to the menu that you used to fit the model, then chooseFactorial Plots > Graphs. For more information, go to Stored model overview.
Main effects plot
Display a main effects plot for each variable.
Interaction plot
If you have two or more variables, you can create a single interaction plot or a full matrix of interaction plots.
Display lower left matrix: Display one plot for each pair of variables.
Display full matrix: Display the full interaction matrix. In the full matrix, Minitab displays the transpose of each plot so that you can see each variable displayed on the x-axis and on the legend. If the two variables interact, you can look at either plot to see the interaction. However, sometimes you can identify interactions more easily when you examine both plots.
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