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Factorial anova minitab express9/28/2023 The other thing I find disturbing (this may be nothing more than the fact that I don’t know Minitab) is the ANOVA table. Since you don’t the only way I know to check for term significance (given that you want to look at interactions and main effects) is to run a forward selection with replacement. My understanding of Eric’s post was that he was recommending a modification of the backward elimination procedure which would work if you had df for error. for the error are identical to those of the two way in your earlier post. If you take a look at your two tables all you have done is arbitrarily declared all two way interactions to be error terms – notice the df, SS Adj SS, etc. I suppose you could say that you have solved the degrees of freedom issue for error by using this approach but I don’t think it is a particularly satisfactory solution.
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