Research Article
May 1980
Log Pearson Type 3 Distribution: A Generalized Evaluation
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 106, Issue 5
Abstract
A generalized study of log Pearson type 3 distribution (LP) is performed in terms of the dimensionless variate which has a population mean of unity. The bounds of LP and different forms assumed by it are presented on the basis of the variance and skewness coefficient. It is seen that as LP deviates more and more from the two parameter lognormal distribution, its upper bound becomes small, the lower bound becomes large, and its from disintegrates to J, reverse J or U shape, some of which are hydrologically unreasonable. The K values for different return periods indicate that a bias in skew estimate does not affect the quantiles of LP in the same manner for all ranges and for all return periods.
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Published In
Journal of the Hydraulics Division
Volume 106 • Issue 5 • May 1980
Pages: 853 - 872
Copyright
© 1980 American Society of Civil Engineers.
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Published in print: May 1980
Published online: Feb 3, 2021
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Authors
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Donthamsetti Veerabhadra Rao
Hydro., St. Johns River Water Management Dist., Palatka, Fla.
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