The Exponentiated Generalized Gumbel Distribution

A class of univariate distributions called the exponentiated generalized class was recently proposed in the literature. A four-parameter model within this class named the exponentiated generalized Gumbel distribution is defined. We discuss the shapes of its density function and obtain explicit expre...

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Bibliographic Details
Main Authors: THIAGO ANDRADE, HELOISA RODRIGUES, MARCELO BOURGUIGNON, GAUSS CORDEIRO
Format: Article
Language:English
Published: Universidad Nacional de Colombia 2015-01-01
Series:Revista Colombiana de Estadística
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Online Access:http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-17512015000100007&lng=en&tlng=en
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Summary:A class of univariate distributions called the exponentiated generalized class was recently proposed in the literature. A four-parameter model within this class named the exponentiated generalized Gumbel distribution is defined. We discuss the shapes of its density function and obtain explicit expressions for the ordinary moments, generating and quantile functions, mean deviations, Bonferroni and Lorenz curves and Rényi entropy. The density function of the order statistic is derived. The method of maximum likelihood is used to estimate model parameters. We determine the observed information matrix. We provide a Monte Carlo simulation study to evaluate the maximum likelihood estimates of model parameters and two applications to real data to illustrate the importance of the new model.
ISSN:0120-1751