Upper Lower Spec Limits transformation by Johnson Fit

carloaz — Tue, 21 Apr 2026 09:39:04 GMT

After tranforming data from non normal distribution by johnson fit , and getting a distribution that is now normal distributed , can the new limits be also shown ?

for example in this test , the original limits were 0 and 10 , what are the new limits in the transformed data by Johnson fit ?

Re: Upper Lower Spec Limits transformation by Johnson Fit

MRB3855 — Tue, 21 Apr 2026 11:54:36 GMT

Hi @carloaz : Generally speaking, whatever formulae you used to transform the data (to Normal) should be used to transform the specs.

topic Re: Upper Lower Spec Limits transformation by Johnson Fit in Discussions

Upper Lower Spec Limits transformation by Johnson Fit

Re: Upper Lower Spec Limits transformation by Johnson Fit