I am working on a DOE training where regular JMP will be used so for DOE analysis Generalized Regression can’t be used. This is a pity for GenReg SVEM results for mixtures are excellent, great tool!
With regular JMP I tried stepwise and all possible models for mixtures and notice quite non reproducible results so – as show in JMP webinars - I switched to simple Standard Least Squares backward analysis which gives quite reproducible results.
However backward regression is a method that I do not recommend for standard DOE analysis (I prefer all possible models) so how do I explain to trainees that with regular JMP backward analysis this is preferred for mixtures? Is there any other alternative, better way for analysing?
