Journal of the Korean Statistical Society

The Korean Statistical Society (한국통계학회)
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Score Tests for Overdispersion

  • Kim, Choong-Rak (Department of Statistics, Pusan National University, Pusan 609-735) ;
  • Jeong, Mee-Seon (Department of Statistics, Pusan National University, Pusan 609-735) ;
  • Yang, Mee-Yeong (Department of Statistics, Pusan National University, Pusan 609-735)
  • Published : 1994.06.01
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Abstract

Count data are often overdispersed, and an appropriate test for the existence of the overdispersion is necessary. In this paper we derive a score test based on the extended quasi-likelihood and the pseudolikelihood after adjusting to the Bartlett factor. Also, we compare it with Levene (1960)'s F-type test suggested by Ganio and Schafer (1992).

Keywords

References

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