topic Re: Modeling Split Plot DOE results in Discussions

Modeling Split Plot DOE results

frankderuyck — Wed, 20 May 2026 16:07:11 GMT

Generalized regression does not work with random effects like whole plot factors so, as random noise cannnot be removed, guess genreg can't be used to model split plot DOE results ?

Re: Modeling Split Plot DOE results

statman — Wed, 20 May 2026 22:13:43 GMT

I suggest you read:

Box, G.E.P., Stephen Jones (1992), “Split-plot designs for robust product experimentation”, Journal of Applied Statistics, Vol. 19, No. 1

Re: Modeling Split Plot DOE results

frankderuyck — Thu, 21 May 2026 06:00:19 GMT

I don't find a free version of this paper. JMP GENREG in 1992??

Re: Modeling Split Plot DOE results

Victor_G — Thu, 21 May 2026 07:52:58 GMT

Hi @frankderuyck,

You can fit Generalized Regression models with random effects by choosing the Generalized Linear Mixed Model personality when launching the Fit Model platform (JMP Pro):

Hope this quick and practical answer will help you,

Re: Modeling Split Plot DOE results

frankderuyck — Thu, 21 May 2026 08:13:24 GMT

I know this Victor but it does not have this great Forward selection Aicc/penalize options like GENREG. Is there anywhere an "All Subsets" option available to get the best model?