A new estimate of skewness with mean-squared error smaller than that of the sample skewness
Titel:
A new estimate of skewness with mean-squared error smaller than that of the sample skewness
Auteur:
Haim, Shore
Verschenen in:
Communications in statistics
Paginering:
Jaargang 25 (1996) nr. 2 pagina's 403-414
Jaar:
1996
Inhoud:
Recently, a new procedure for distribution fitting, based on matching of the first two moments, partial and complete, was introduced (Shore, 1995). When the sampling skewness of the fitted distribution is compared to the sample skewness, and both are regarded as estimates of the skewness of the underlying distribution, the mean-squared-error of the former is appreciably lower than that of the latter. In this paper we present some simulation results to support this claim and demonstrate its magnitude. An alternative two-moment distributional fitting procedure, based on a new family of four-parameter distributions, is also introduced and studied. Since three-moment distribution fitting is very common practice in simulation studies, these results may have important implications for the current state-of-the-art of simulation
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