A NOTE ON A TEST FOR POISSON OVERDISPERSION

被引：45

作者：

BOHNING, D

机构：

来源：

BIOMETRIKA | 1994年 / 81卷 / 02期

关键词：

EXTRA-POISSON VARIATION; FISHERS DISPERSION INDEX; OVERDISPERSION TEST;

D O I：

10.2307/2336974

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This note discusses an error occurring in a test for Poisson overdispersion suggested by Tiago de Oliveira (1965). The limiting null distribution of the suggested statistic is neither pivotal nor is it standard normal. The error lies in the computation of the asymptotic standard error of the overdispersion estimate, for which a corrected version is given. The corrected version of the test statistic becomes equivalent to the normalized version of Fisher's index of dispersion.

引用

页码：418 / 419

页数：2