DOE results analysis
HiI was analyzing the results of a DOE with 5 factors moved up and down wrt set values. The response Y is a measured resistance.I ran a fit model by using a full factorial and then a stepwise regression. The stopping rule was Min BIC and direction: forward. Once selected the suggested factors I made the model and ran it. The R2 was very good as also the profilers. Anyway if I look at residuals th...