Forest Products Laboratory
Confidence bounds for a lognormal distribution coefficient of variation
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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.
This page is a form for calculating confidence bounds on the
coefficient of variation associated with a lognormal distribution.
We
also have programs that do the following:
The theory behind these programs is described in three publications:

Confidence Bounds for Normal and Lognormal Distribution Coefficients of Variation,
2003, Research Paper 609, USDA Forest Products Laboratory, Madison, Wisconsin.

Confidence Bounds and Hypothesis Tests
for Normal Distribution Coefficients of Variation,
2007, Research Paper 638, USDA Forest Products Laboratory, Madison,
Wisconsin.
 Verrill, S. and Johnson, R.A. (2007). "Confidence Bounds and
Hypothesis Tests for Normal Distribution Coefficients of Variation."
Communications in Statistics  Theory and Methods, Volume 36,
Number 12, pages 21872206.
For questions or comments about this Web page, please contact Steve Verrill at
sverrill@fs.fed.us
or 6082319375.
[Forest Service]
[Forest Products
Lab]
[FPL Statistics Group]
Last modified on 9/9/09.
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