DOI: 10.5176/2251-1938_ORS09

Authors: Mohd Asrul A endi bin Abdullah, Elmi Omar Salad, Nyi Nyi Naing and Abdul Kudus


Traditionally negative binomial was used where Poisson distribution in analysis existing overdisper-sion. Like Poisson distribution,negative binomialis also widely used in medical studies, epidemio-logical, aquaculture and accident analysis and any related descriptive analysis. When there is an ex-cess number of zero count useful approach to used a mixture model with a proportion ! of subjects not at risk, and a proportion of 1


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