Artículos de revistas
The Poisson-exponential lifetime distribution
Fecha
2011Registro en:
COMPUTATIONAL STATISTICS & DATA ANALYSIS, v.55, n.1, p.677-686, 2011
0167-9473
10.1016/j.csda.2010.05.033
Autor
CANCHO, Vicente G.
LOUZADA-NETO, Franscisco
BARRIGA, Gladys D. C.
Institución
Resumen
In this paper we proposed a new two-parameters lifetime distribution with increasing failure rate. The new distribution arises on a latent complementary risk problem base. The properties of the proposed distribution are discussed, including a formal proof of its probability density function and explicit algebraic formulae for its reliability and failure rate functions, quantiles and moments, including the mean and variance. A simple EM-type algorithm for iteratively computing maximum likelihood estimates is presented. The Fisher information matrix is derived analytically in order to obtaining the asymptotic covariance matrix. The methodology is illustrated on a real data set. (C) 2010 Elsevier B.V. All rights reserved.