摘要
本文对概率权矩法样本统计量的代数界进行了详细的研究．结果表明：概率权矩法样本统计量Ｃｖ、Ｃｓ的代数界，与分布的线型以及采用的不同样本矩公式有关．就Ｐ－Ⅲ型分布而言，应用无偏样本矩公式，Ｃｖ与Ｃｓ均不存在代数界．文中所建立的分析方法同样适用于其它分布类型．
In this paper,algebraic boundary of sample statistics for probability weighted moments have been studied.The results indicate that the algebraic boundaries of sample statistics parameters Cv Csare related to distribution patterns and formulas of sample moments adopted,when unbiased formulas of sample moments is applied, algebraic boundaries of Cv.Csfor P-Ⅲ distribution will not exist.This analytical method can be also applied to other distribution patterns.
出处
《水利学报》
EI
CSCD
北大核心
1994年第7期78-84,共7页
Journal of Hydraulic Engineering
关键词
概率权矩法
样本
计量
代数界
probability weighted moments,parameter estimation,sample statistics, algebraic boundeary.
