topic Re: Reliability analysis: many points outside confidence band in Discussions

Reliability analysis: many points outside confidence band

MarkovVaribles1 — Sun, 11 Jun 2023 11:20:13 GMT

Hi I have a dataset that has failures at cycles: 10, 11, 17, 28, 26, 10, 10, 1, 1, 1,1244, 1100.

187678 censored at cycle 30 (test stopped). 162834 censored at cycle 300 and 13313 censored at 3000.

When I use JMP's life distribution to analyze this data, I get strange plot with most the censored points outside the confidence band.

I have not used JMP for a while and use JMP 15.

Is there anything wrong with the data or something else going on?

Thanks

Re: Reliability analysis: many points outside confidence band

Mark_Bailey — Wed, 08 Dec 2021 19:26:08 GMT

No, you did nothing wrong, and neither did JMP. The scatter plot includes only the exact life data. The censored data are plotted separately above the main scatter plot, for reference. That is to say, they appear in separate plotting frames. I can't remember when this change was made, but perhaps just a few versions ago.

Re: Reliability analysis: many points outside confidence band

MarkovVaribles1 — Wed, 08 Dec 2021 19:42:23 GMT

Thank you very much!

this helped a lot :)