topic Re: Formula used to calculate upper CI in Discussions

Formula used to calculate upper CI

ExactOkapi626 — Tue, 25 Feb 2025 18:57:23 GMT

Hi all,

Does anyone know what is the formula used to calculate the upper CI for the standard deviation in the distribution platform > confidence interval?

Re: Formula used to calculate upper CI

Byron_JMP — Wed, 19 Mar 2025 20:43:57 GMT

The distribution platform displays the 95% upper and lower confidence intervals of the Mean, If you want confidence intervals for the StdDev, then try using the bootstrap option to get the bootstrapped upper and lower confidence intervals.

Re: Formula used to calculate upper CI

Dan_Obermiller — Thu, 20 Mar 2025 01:12:14 GMT

The formula for the standard deviation confidence interval is usually this:

I believe these are the formulas that JMP is using for the standard deviation confidence intervals that are available from the Distribution variable name > Confidence Intervals menu choice..