topic Re: DOE - editing Custom Design dialogue of an existing table in Discussions

DOE - editing Custom Design dialogue of an existing table

dbu — Thu, 08 Jun 2023 21:08:21 GMT

Hello,

I created a DOE table which had a minimum # of runs as 44. The table has 8 factors (7 continuous and 1 discrete) and 3 responses.

However, when I re-enter the DOE dialogue, press "back" and edit my factors something strange happens. Adding a new continuous factor actually decreases the minimum # of runs to 10. How could this be true?

Thanks in advance.

Re: DOE - editing Custom Design dialogue of an existing table

Mark_Bailey — Mon, 28 Feb 2022 17:28:23 GMT

The model will change when you change factors (add or remove one). Did you check that all the same terms are present for both designs?

Re: DOE - editing Custom Design dialogue of an existing table

dbu — Tue, 01 Mar 2022 15:49:30 GMT

Hi Mark-

Same terms were indeed present - but I did find the "issue".

I had RSM model selected for an 8-factor design. When I added the 9th factor the model reverted to Main Effects, significantly reducing the number of experiments necessary. I'm brand new to JMP and didn't catch this.

Thanks for your response!

Re: DOE - editing Custom Design dialogue of an existing table

Mark_Bailey — Tue, 01 Mar 2022 15:53:34 GMT

So the terms were not the same in both cases. That is what I thought. Glad you learned about JMP behavior in Custom Design.

Re: DOE - editing Custom Design dialogue of an existing table

dbu — Tue, 01 Mar 2022 16:23:08 GMT

Oh I misunderstood your question - the original 8 terms were the same but I added a new 9th term.

Thanks again!