Dear JMP Pros,
I have a dataset (See attachment) with two discrete factors (X_1 and X_2) and after model running, the fit looks good in the actual by predicted as well as in the surface profiler. However, I have a significant lack of fit here.
I am wondering what the reason is here and how do I deal with this dataset? Can I still use and believe the fit? Please note, that I had to use the discrete set of factors here instead of an textbook DoE.
Thanks for your help here,
Best regards,
Simon