Fit Definitive Screening: does Main Effects Plot disagree with model Parameter Estimates
I'm thinking there must be a simple explanation for this but I'm having "statistician's block" today.In the attached data, I am curious about at least two things.1. Fit Definitive Screening identifies X__3 as significant and not X__2. I do know that if I use Fit Model to do this that X__2's parameter estimate is much smaller than X__3's, so there is a smaller t-ratio and so X__2 is not significant...