https://community.jmp.com/t5/Discussions/Exploring-sample-size-for-one-sample-variance/m-p/924292#M108251 <P>I have a variance I want to set as an upper bound, with a confidence of 90%. However when I try adjusting the variance, it does nothing to change the sample size. I see this issue for any confidence levels below 95%. It works as expected at 95% or above. I attached a screen shot to show that when I adjust the bound it&nbsp;</P> Fri, 16 Jan 2026 02:20:32 GMT FaceDecompPuppy 2026-01-16T02:20:32Z https://community.jmp.com/t5/Discussions/Exploring-sample-size-for-one-sample-variance/m-p/924292#M108251 <P>I have a variance I want to set as an upper bound, with a confidence of 90%. However when I try adjusting the variance, it does nothing to change the sample size. I see this issue for any confidence levels below 95%. It works as expected at 95% or above. I attached a screen shot to show that when I adjust the bound it&nbsp;</P> Fri, 16 Jan 2026 02:20:32 GMT https://community.jmp.com/t5/Discussions/Exploring-sample-size-for-one-sample-variance/m-p/924292#M108251 FaceDecompPuppy 2026-01-16T02:20:32Z https://community.jmp.com/t5/Discussions/Exploring-sample-size-for-one-sample-variance/m-p/924728#M108289 <P>Hi&nbsp;<a href="https://community.jmp.com/t5/user/viewprofilepage/user-id/84597">@FaceDecompPuppy</a>&nbsp;: I am able to duplicate your issue via v18 (I don't know about v19). Looks like a bug to me. I'd contact&nbsp;<SPAN>&nbsp;</SPAN><A href="mailto:support@jmp.com" target="_blank" rel="nofollow noopener noreferrer">support@jmp.com</A>&nbsp;.</P> Sun, 18 Jan 2026 14:17:47 GMT https://community.jmp.com/t5/Discussions/Exploring-sample-size-for-one-sample-variance/m-p/924728#M108289 MRB3855 2026-01-18T14:17:47Z