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 Confidence interval for interpolation of X from Y		  New Topic  Reply to Topic
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iloyi

2 Posts
Posted - 02/16/2023 :  11:43:32 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi, I am using Gadget>Interpolate. I got the interpolated values table. I am finding X value from Y, how do I find the confidence interval for the X value I interpolated? (Note: This is different from the usual find Y from X.)

YimingChen

1626 Posts
Posted - 02/17/2023 :  09:10:19 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
To get the confidence interval of X from Y, you need to perform Non-linear curve fitting (menu Analysis->Fitting->Nonlinear Curve Fitting). See the figure below:


James
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iloyi

2 Posts
Posted - 02/21/2023 :  9:13:53 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Thank you very much!
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