How many DFs are required to test X number of main effects - JMP Fit Model
I have been asked to analyze multiple main effects and their various interactions, but don't think I can do so as I achieve Lost DFs error messages when I use the Fit Model analysis. In case it helps, here the details of the data. Main effects (size): Location (4), Cultivar (4), Region (2, 2 Locations grouped per region), and Year (3). I only get results/appear to have enough DF when I run any two...