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   The beta-half-Cauchy distribution  
   
نویسنده cordeiro g.m. ,lemonte a.j.
منبع journal of probability and statistics - 2011 - شماره : 0
چکیده    On the basis of the half-cauchy distribution,we propose the called beta-half-cauchy distribution for modeling lifetime data. various explicit expressions for its moments,generating and quantile functions,mean deviations,and density function of the order statistics and their moments are provided. the parameters of the new model are estimated by maximum likelihood,and the observed information matrix is derived. an application to lifetime real data shows that it can yield a better fit than three- and two-parameter birnbaum-saunders,gamma,and weibull models. copyright © 2011 gauss m. cordeiro and artur j. lemonte.
آدرس departamento de estatística,universidade federal de pernambuco,50749-540 recife, Brazil, departamento de estatística,universidade de são paulo,05311-970 são paulo, Brazil
 
     
   
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