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A New Generalized Exponential Geometric Distribution
Authors:Hamid Bidram  Javad Behboodian  Mina Towhidi
Institution:1. Department of Statistics , Shiraz University , Shiraz , Iran;2. Department of Statistics , University of Isfahan , Isfahan , Iran hamid_bidram@yahoo.com;4. Department of Statistics , Shiraz University , Shiraz , Iran
Abstract:In this article, another version of the generalized exponential geometric distribution different to that of Silva et al. (2010 Silva , R. B. , Barreto-Souza , W. , Cordeiro , G. M. ( 2010 ). A new distribution with decreasing, increasing and upside-down bathtub failure rate. Computat. Statist. Data Anal. 54: 935–944 . Google Scholar]) is proposed. This new three-parameter lifetime distribution with decreasing, increasing, and bathtub failure rate function is created by compounding the generalized exponential distribution of Gupta and Kundu (1999 Gupta , R. D. , Kundu , D. ( 1999 ). Generalized exponential distributions . Austral. NZ J. Statist. 41 ( 2 ): 173188 .Crossref], Web of Science ®] Google Scholar]) with a geometric distribution. Some basic distributional properties, moment-generating function, rth moment, and Rényi entropy of the new distribution are studied. The model parameters are estimated by the maximum likelihood method and the asymptotic distribution of estimators is discussed. Finally, an application of the new distribution is illustrated using the two real data sets.
Keywords:Bathtub failure rate  Compound distribution  Extended exponential-geometric distribution  Goodness of fit  Maximum likelihood estimation
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