Several Methods of Re-Designing Area Samples Utilizing Probabilities Proportional to Size when the Sizes Change Significantly
规模显著变化时按规模概率区域样本的重新设计
For purposes of obtaining statistical data by enumeration, systematic sampling with probability proportional to size in one or more stages is frequently employed. The article describes two methods of changing the measures of sizes without introducing a bias in the estimation procedure. They result in the reduction of the variance of sample take, and, in the illustrative material presented, result in varying degrees of overlap before and after the changes of sizes. These…