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Topic: How to calculate a confidence interval from a single value?
Replies: 1   Last Post: Jul 28, 1996 11:19 PM

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 Stanley110@aol.com Posts: 84 Registered: 12/6/04
How to calculate a confidence interval from a single value?
Posted: Jul 28, 1996 9:11 AM

How does one calculate a confidence interval of a single measurement?
Without a standard deviation (not reliable from a single measurement), it
does not seem possible to calculate a confidence interval.

Now I know what the standard deviation of this measurement is from a
history of this measurement (same method, instruments, operators, etc.).
Can I use the historical standard deviation as the standard deviation of
the current singlicate measurement to estimate the confidence interval of
the current measurement?