摘要
针对正态总体情形,给出总体标准差的两个新的无偏估计量,并且证明了这两个估计量具有相合性与渐近方差为零的性质,最后对于其中结构较繁琐的估计量给出它的简化计算公式.
In view of the normal population situation,this paper proposed two new unbiased estimators of standard deviation,and proved that these two estimators had the properties of consistency and asymptotic variance was zero. Finally,one of the estimators with the complicated structure was presented for a simplified calculation formula.
出处
《重庆工商大学学报（自然科学版）》
2016年第3期56-59,共4页
Journal of Chongqing Technology and Business University:Natural Science Edition
基金
中山市科技规划项目(20123A351)
中山大学新华学院2014院级教改项目(2014J001)
关键词
正态总体
标准差
无偏估计
相合性
简化计算公式
normal population
standard deviation
unbiased estimator
consistency
simplified calculation formula
