摘要
本文提出了边缘密度函数,证明了在该函数下的极大似然估值具有无偏差性, 从而对文献[1]中子样方差的极大似然估值具有有偏性从理论上得到了根本解决.
In this paper, the edge density function is first brought up and then the fact isprored that the maximum Likelihood estimate in this funcition is an unbiassed one, Thus the problem of the biassed maximum likelihood estimate of sample Variance in Reference [1] has been radically soled in theory.
关键词
函数
子样方差
无偏性
估值
edge dersity function
rapmlae variance
morximum likelihood estimate
unbiassed
