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The Weibull Fréchet distribution and its applications

Journal of Applied Statistics • 2016
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Publication Information
Authors Ahmed Z. Afify;Haitham M. Yousof;Gauss M. Cordeiro;Edwin M. M. Ortega;Zohdy M. Nofal
Keywords Maximum likelihood; moment; order statistics; probability weighted moment; Rényientropy; Weibull G-family
Journal Journal of Applied Statistics
Publisher Taylor and Francis
Volume 43
Issue 14
Pages 2608-2626
publication.type International
Paper Link Open Link
Supplementary Materials Not Available
Abstract
A new four-parameter lifetime model called the Weibull Fréchet distribution is defined and studied. Various of its structural properties including ordinary and incomplete moments, quantile and generating functions, probability weighted moments, Rényi andδ-entropies and order statistics are investigated. The new density function can be expressed as a linear mixture of Fréchet densities. The maximum likelihood method is used to estimate the model parameters. The new distribution is applied to two real data sets to prove empirically its flexibility. It can serve as an alternative model to other lifetime distributions in the existing literature for modeling positive real data in many areas.