Bivariate Conway–Maxwell Poisson distributions with given marginals and correlation

SH Ong, RC Gupta, T Ma, SZ Sim - Journal of Statistical Theory and …, 2021 - Springer
SH Ong, RC Gupta, T Ma, SZ Sim
Journal of Statistical Theory and Practice, 2021Springer
Abstract The Conway–Maxwell Poisson (CMP) distribution is a popular model for analyzing
data that exhibit under or over dispersion. In this article, we construct bivariate CMP
distributions with given marginal CMP distributions and range of correlation coefficient over
(− 1, 1) based on the Sarmanov family of bivariate distributions. One of the constructions is
based on a general method for weighted distributions. The dependence property is
examined. Parameter estimation, tests of independence and adequacy of model and a …
Abstract
The Conway–Maxwell Poisson (CMP) distribution is a popular model for analyzing data that exhibit under or over dispersion. In this article, we construct bivariate CMP distributions with given marginal CMP distributions and range of correlation coefficient over (− 1, 1) based on the Sarmanov family of bivariate distributions. One of the constructions is based on a general method for weighted distributions. The dependence property is examined. Parameter estimation, tests of independence and adequacy of model and a Monte Carlo power study are discussed. A real data set is used to exemplify its usefulness with comparison to other bivariate models.
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