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Design of Experiments

acmolinaro1

Community Trekker

Joined:

Jun 5, 2015

I am using Custom Design under Design of Experiments to create formulations. When JMP created the formulations for the experiment, two of the formulations were repeats with the same measurements. I was wondering if this was done on purpose or if it is something wrong that the software produced.

2 REPLIES
Dan_Obermiller

Joined:

Apr 3, 2013

This can happen, but is situational. For example, suppose you only need 7 runs to estimate the model you want, but you ask JMP for 8 runs. The optimality algorithm will choose the 8th run that provides the best design, so it may be a repeat. Note that my comment assumes that you have not specifically asked for any replicates.

Dan Obermiller
acmolinaro1

Community Trekker

Joined:

Jun 5, 2015

Thank you for your reply to my question