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    Author(s): Steve Verrill
    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)
    Station: Forest Products Laboratory
    PDF: View PDF  (426 KB)

    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.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    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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    Keywords

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

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https://www.fs.usda.gov/treesearch/pubs/8938