Forest Products Laboratory
Exact confidence bounds for a normal distribution coefficient of variation
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This page is a form for calculating a two-sided confidence interval on
the coefficient of variation associated with a normal distribution.
Here is FORTRAN and Java
source code for
standalone programs that yield the
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,
- 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 2187-2206.
For questions or comments about this Web page, please contact Steve Verrill at
[FPL Statistics Group]
Last modified on 9/9/09.
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