本文提出一种新的抽样方法,通过补充无辅助信息分层样本来提高含有辅助信息整群抽样的精度.得到的结果表明与单一的整群抽样比估计、单一的分层随机抽样简单估计相比,这种抽样设计的估计精度更高.
Cluster sampling with auxiliary information is supplemented with stratified sample without auxiliary information. Results obtained show that the present approach is more efficient than approaches of cluster sampling with auxiliary information or na? ve stratified sampling in case they are applied individually.