摘要
本文通过多元抽样调查的两级抽样方法，得到了总体均值的无偏估计量，并且证明了和一元情形一样好的结果。
By use of the two stage sampling method for multivariate investigation,the ratio type estimator of the population mean is obtained.The results are proved to be as good as those obtained from one dimensional sampling investigation.
出处
《内蒙古工业大学学报（自然科学版）》
1998年第4期31-18,共1页
Journal of Inner Mongolia University of Technology：Natural Science Edition
