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  • JMP Security Notice: CVE-2026-109618 and CVE-2026-109619

    JMP promptly initiated a review of its products, services, and relevant infrastructure for exposure to CVE-2026-109618 and CVE-2026-109619.

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Laney P and U charts

Can you please add the ability to test for over dispersion/under dispersion and then the option to make Laney P and U charts?

3 Comments
mia_stephens
Staff
Status changed to: New

Hi Steve,

 

Lany P' and U' charts are being added in JMP 17. We've considered adding tests for over and under dispersion, but there does not seem to be consensus in peer-reviewed publications on an appropriate method. Do you know of any cited references?

 

Thank you,

Mia

 

shampton82
Level VII

Hey Mia,

Thats great to hear, thanks for the update!

 

This is what I had used in my pre-JMP days:

https://support.minitab.com/en-us/minitab/18/help-and-how-to/quality-and-process-improvement/control...

mia_stephens
Staff

Thanks Steve, we've found that as well. However, no references are cited that we can find. Still looking for a peer-reviewed publications if you come across any.