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Title: Confidence bounds for normal and lognormal distribution coefficients of variation

Author: Verrill, Steve;

Date: 2003

Source: Res. Pap. FPL-RP-609. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 13 pages

Publication Series: Research Paper (RP)

Description: This paper compares the so-called exact approach for obtaining confidence intervals on normal distribution coefficients of variation to approximate methods. Approximate approaches were found to perform less well than the exact approach for large coefficients of variation and small sample sizes. Web-based computer programs are described for calculating confidence intervals on coefficients of variation for normally and lognormally distributed data.

Keywords: Noncentral T, noise to signal ratio, variability, coefficient of variation, confidence bounds, normal, lognormal

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Citation:


Verrill, Steve 2003. Confidence bounds for normal and lognormal distribution coefficients of variation. Res. Pap. FPL-RP-609. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 13 pages

 


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