多阶段抽样第一阶段样本──含量问题初探哈尔滨城市社会经济调查队那宪义本文以哈尔滨市住户调查实践为背景，通过对多阶段抽样方差，变异系数的分析得出的结论：多阶段抽样的关键，在于抽好第一阶段样本，尽可能便第一阶段样本含量大一些，以减少抽样方差，保证样本的代... Multi-stage sampling of the first phase of the sample ─ ─ content problems Harbin Urban Social Economic Investigation Team that the constitutional In this paper, the background of household survey in Harbin City, through the multi-stage sampling variance, coefficient of variation analysis concluded: multi-stage sampling The key is to draw the first phase of the sample, as much as possible the first phase of the sample size larger, in order to reduce the sampling variance to ensure that the sample of the generation ...