多元有限总体的PPS抽样方法

A PPS Sampling Method of Multivariate Finite Population

利用ＰＰＳ抽样方法，得到了多元有限总体总值的无偏估计量，估计量的协方差阵以及协方差阵的无偏估计量，与不放回整群抽样作了比较。

AbstractIn this paper, we obtained an unbiased estimator of multivariate finite population total, the covariance matrix of the estimator and unbiased estimator of the covariance matrix by PPS method. We compared it with cluster sampling without replacement.