topic Re: JMP reliability data in Discussions

JMP reliability data

ClipShift — Thu, 24 Oct 2024 18:56:38 GMT

Hello JMP community,

I have some reliability data to analyse. When I use JMP Analyse >> reliability and survival >> life distribution, after I entered Y, time to Event and Censor, I selected Weibull fitting and get all statistics. How can I get the R2 for the Weibull fitting?

Re: JMP reliability data

peng_liu — Mon, 28 Oct 2024 13:30:02 GMT

When you say R2, I think you mean R-squared from least squares regression.

Life Distribution uses maximum likelihood estimation, which is the proper method compared to least squares.

So, you won't find R2.

Re: JMP reliability data

MRB3855 — Mon, 28 Oct 2024 13:54:13 GMT

Hi @ClipShift : To follow up @peng_liu , pretty good article here comparing the two methods.

https://community.jmp.com/kvoqx44227/attachments/kvoqx44227/mastering-jmp/72/4/Genschel%20%20Meeker%20Comparison%20ML%20and%20Median-Rank%20Regression%20for%20Weibull%20Est%202.pdf