Re: Control limits on EWMA control chart JMP 16

Report Inappropriate Content · Jun 10, 2023 1:44 PM

In the EWMA chart from the Legacy control charts, it is possible to specify both the weight and the K values (multiplier for control limits). Changing the K value is a typical step when parametrizing an EWMA chart. In the new EWMA control chart in JMP16, how can I change the K value?

statman · Apr 18, 2021 7:59 AM

I'm a bit confused...Here is the platform options for EWMA under Legacy Control Charts.

Screen Shot 2021-04-18 at 8.52.57 AM.jpg

Is that the KSigma you are looking for? I see an option for changing weight and KSigma values?

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

MartinC · Apr 20, 2021 07:58 AM

My question is about how to change the K value in the new EWMA chart: Analyze...Quality and Process... Control Chart... EWMA Control Chart.

tonya_mauldin · Apr 20, 2021 09:12 AM

There is no method to alter the value of K in the new EWMA platform. This request has been sent to development for consideration.

MartinC · Apr 22, 2021 01:38 PM

Thank you. I hope they keep this option !

Audrey_Shull · Feb 28, 2022 11:23 AM

Hi everyone - i'd like to state here that this option has in fact been implemented by the development team in the upcoming major JMP release, JMP 17. JMP 17 will be available in the fall of 2022. A K Sigma option is now available in the red triangle menu. By default, K Sigma is set to 3.

Control limits on EWMA control chart JMP 16