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  • Title: Correction for Rhiel's theory for the range estimator of the coefficient of variation for skewed distributions.
    Author: Rhiel GS.
    Journal: Psychol Rep; 2010 Feb; 106(1):93-4. PubMed ID: 20402431.
    Abstract:
    In 2007, Rhiel presented a technique to estimate the coefficient of variation from the range when sampling from skewed distributions. To provide an unbiased estimate, a correction factor (a(n)) for the mean was included. Numerical correction factors for a number of skewed distributions were provided. In a follow-up paper, he provided a proof he claimed showed the correction factor was independent of the mean and standard deviation, making the factors useful as these parameters vary; however, that proof did not establish independence. Herein is a proof which establishes the independence.
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