How can I identify outliers from a three sigmal control chart in JMP?

ABDromedary218 — Sun, 07 May 2023 22:25:45 GMT

Re: How can I identify outliers from a three sigmal control chart in JMP?

WebDesignesCrow — Mon, 08 May 2023 02:09:21 GMT

Very limited information given.

But, SPC is not used to identify outliers because it use Process Data to derive the control limits.

How about using "Analyze > Screening > Explore Outliers>" tool in JMP to identify the outliers?

For univariate data, you can use Quantile Range or Robust Fit Outliers to detect outliers

But if you want to specify the "sigma = 3", maybe you want to use Robust Fit Outliers using robust method.