摘要
改进了比率估计的均方误差 ,给出了偏差的价为 1/n3
Some improvements for the mean square errors of the ratio estimator are presented. The mean square errors and estimated mean square errors for the ratio estimator with bias of order 1/n 3are given.
出处
《江南大学学报（自然科学版）》
CAS
2002年第2期197-199,共3页
Joural of Jiangnan University (Natural Science Edition)
关键词
比率估计量
偏差
均方误差
近似值
样本比率
随机抽样
总体比率
ratio estimator
bias
approximate mean square errors
estimation of approximate mean square errors
