AN APPROXIMATION TO THE DISTRIBUTION OF THE X2 GOODNESS-OF-FIT STATISTIC FOR USE WITH SMALL EXPECTATIONS
成果类型：
Article
署名作者：
LAWAL, HB; UPTON, GJG
署名单位：
University of Essex
刊物名称：
BIOMETRIKA
ISSN/ISSBN：
0006-3444
发表日期：
1980
页码：
447453
关键词：
摘要：
The X2 goodness-of-fit test is considered for cases in which the observed frequencies are supposed to be distributed according to a specified multinomial distribution. A log normal approximation to the distribution of X2 is proposed. The approximation is valid providing that the smallest expectation is greater than r/d3/2, where r is the number of expectations < 5, and d is the number of degrees of freedom.