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Laney P and U charts

Status: New Submitted by on ‎12-06-2021 11:36 AM
3 Comments (3 New)

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
Staff
‎12-06-2021 04:30 PM
‎12-06-2021 04:30 PM
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
‎12-22-2021 12:20 PM
‎12-22-2021 12:20 PM

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
Staff
‎12-22-2021 12:46 PM
‎12-22-2021 12:46 PM

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.