Forest Products Laboratory





Exact one-sided upper confidence bound for a normal distribution coefficient of variation


DISCLAIMER OF WARRANTIES

THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. THE AUTHOR (USDA FOREST SERVICE, FOREST PRODUCTS LABORATORY) DOES NOT WARRANT, GUARANTEE OR MAKE ANY REPRESENTATIONS REGARDING THE SOFTWARE OR DOCUMENTATION IN TERMS OF THEIR CORRECTNESS, RELIABILITY, CURRENTNESS, OR OTHERWISE. THE ENTIRE RISK AS TO THE RESULTS AND PERFORMANCE OF THE SOFTWARE IS ASSUMED BY YOU. IN NO CASE WILL ANY PARTY INVOLVED WITH THE CREATION OR DISTRIBUTION OF THE SOFTWARE BE LIABLE FOR ANY DAMAGE THAT MAY RESULT FROM THE USE OF THIS SOFTWARE.

Sorry about that.



What is the desired confidence level?
(for example, 95 for 95% confidence)


What is the sample size, n?


What is the sample mean?


What is the sample standard deviation?
(The sum of squares divisor in the standard deviation calculation should be n - 1 rather than n.)





This page is a form for calculating a one-sided upper confidence bound on the coefficient of variation associated with a normal distribution.

We also have programs that do the following:

The theory behind these programs is described in three publications:




For questions or comments about this Web page, please contact Steve Verrill at sverrill@fs.fed.us or 608-231-9375.

[Forest Service] [Forest Products Lab] [FPL Statistics Group]


Last modified on 9/9/09.

As of last midnight, this page had been accessed times.