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Different mixture experiment analysis results JMP 17 & 18

frankderuyck
Level VI

Did something in JMP 18 change in analysis of mixture experiment results. Below is shown that analysis results from exactly the same DOE data sets are different

1. DOE three component mixture

JMP 17 results 

frankderuyck_0-1734439601107.png

JMP 18 Results

frankderuyck_1-1734439805016.png

2. DOE three mixture components + one process effect

JMP 17 results 

frankderuyck_2-1734439970481.png

JMP 18 results 

frankderuyck_3-1734440110289.png

In JMP 18 analysis above the model is different!

What has changed and why? Remark: despite of different plots & model graphs of JMP 17 - 18 prediction profilers are identical. 

13 REPLIES 13
statman
Super User


Re: Different mixture experiment analysis results JMP 17 & 18

I'm not sure the correct word is accurate...different, yes.  It appears the JMP18 version looks more like a leverage plot than the one from JMP17.  Typically those plots are narrowest in the center and expand near the ends.  Collinearity is typically a cluster of points near the middle.

 

https://www.jmp.com/support/help/en/18.1/#page/jmp/effect-leverage-plots.shtml?os=mac&source=applica...

"All models are wrong, some are useful" G.E.P. Box
frankderuyck
Level VI


Re: Different mixture experiment analysis results JMP 17 & 18

The DOE analysis script is 100% reproducible both in JMP 17 and 18.  When running second DOE (mixture + process effect) analysis script, developed in jmp 17, in jmp 18 besides the prediction plot also model is different (?) The prediction profilers always are equal.

statman
Super User


Re: Different mixture experiment analysis results JMP 17 & 18

Yes, but in your initial post, the statistics were different as well. That does not appear to be a JMP issue.

"All models are wrong, some are useful" G.E.P. Box
frankderuyck
Level VI


Re: Different mixture experiment analysis results JMP 17 & 18

As in case 1 the case 2 data set and analysis script are exactly the same, indeed now results are also different..

Only difference is the two jmp versions