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Score tests for overdispersion in the bivariate negative binomial models
- Issue Date
- 2009
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Bivariate Poisson; bivariate negative binomial; Overdispersion; Score test
- Citation
- JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION, v.79, no.1, pp.11 - 24
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION
- Volume
- 79
- Number
- 1
- Start Page
- 11
- End Page
- 24
- ISSN
- 0094-9655
- Abstract
- In this paper, we derive the score test statistic for testing overdispersion and covariance parameter in the bivariate negative binomial (BNB) models. The testing procedures are extended to the BNB regression models. Two empirical examples with and without covariates are provided to illustrate the results.
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