A goodness-of-fit test for the multivariate Poisson distribution

Bivariate count data arise in several different disciplines and the bivariate Poisson distribution is commonly used to model them. This paper proposes and studies a computationally convenient goodness-of-fit test for this distribution, which is based on an empirical counterpart of a system of equati...

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Detalles Bibliográficos
Autores: Novoa Muñoz, Francisco, Jiménez Gamero, María Dolores
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/44841
Acceso en línea:http://hdl.handle.net/11441/44841
Access Level:acceso abierto
Palabra clave:Bivariate Poisson distribution
Goodness-of-fit
Empirical probability generating function
Parametric bootstrap
Weighted bootstrap
Multivariate Poisson distribution
Descripción
Sumario:Bivariate count data arise in several different disciplines and the bivariate Poisson distribution is commonly used to model them. This paper proposes and studies a computationally convenient goodness-of-fit test for this distribution, which is based on an empirical counterpart of a system of equations. The test is consistent against fixed alternatives. The null distribution of the test can be consistently approximated by a parametric bootstrap and by a weighted bootstrap. The goodness of these bootstrap estimators and the power for finite sample sizes are numerically studied. It is shown that the proposed test can be naturally extended to the multivariate Poisson distribution.