topic Re: GR&R method used by JMP in Discussions

GR&R method used by JMP

LoglinearRange8 — Fri, 09 Jun 2023 00:57:03 GMT

I would like to know the details of the GR&R method used by JMP. I have tried to replicate the JMP's results by writing a simple code in Python. I am assuming JMP is using ANOVA method (https://www.spcforexcel.com/knowledge/measurement-systems-analysis/anova-gage-rr-part-1) but, I never get the same results as JMP calculations. Could someone direct me to the related JMP documentation?

Thank you

Re: GR&R method used by JMP

P_Bartell — Thu, 10 Nov 2022 16:27:13 GMT

There is no 'one way' to do GR & R in JMP. There are multiple numeric as well as graphic approaches baked into native JMP. So trying to mimic JMP in any other application can be problematic depending on the workflow one chooses in JMP. Nevertheless, here is a starting point for the JMP online documentation for Measurement Systems Analysis: MSA in JMP

Re: GR&R method used by JMP

statman — Thu, 10 Nov 2022 18:17:45 GMT

First, welcome to the community. As Pete suggests, there are multiple ways to perform a measurement system analysis. I personally prefer the Wheeler (& Lyday) method. It includes both graphical analysis, including assessment of the consistency of variance components, and quantitative evaluation.

JMP has lots of options for you:

https://www.jmp.com/support/help/en/16.2/?os=mac&source=application#page/jmp/measurement-systems-analysis-platform-options.shtml%23

See Wheeler, D. J. (2006). EMP III Using Imperfect Data. Knoxville, TN: SPC Press.

or the white paper:

https://www.jmp.com/en_us/whitepapers/jmp/emp-management-systems-analysis.html