摘要
PPS放回抽样方案下对总体均值的估计与简单随机抽样方案下对总体均值的乘积估计是实际应用相当广泛的两种抽样方法 .
The estimation for the population mean under PPS sampling scheme and the product estimation for population mean under simple random sampling scheme are two often methods in practice. Their theoretical research is very rich too. In the present paper, the efficiency of this two estimation is comparied in case that interest index and size index being negative related.
出处
《信阳师范学院学报(自然科学版)》
CAS
2002年第4期393-396,共4页
Journal of Xinyang Normal University(Natural Science Edition)