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利用两阶段抽样估计子总体均值AI 解读

In sample surveys, it is often desired to estimate the means of subpopulations or ‘domains of study’. If there is no list of the units comprising each domain, a two-phase sampling procedure may be employed. One possibility is to select a simple random sample of size n′ with the domain to which each unit belongs being determined. Then a simple random subsample of size n′j, is selected from the n′j, units found in the first phase sample to be members of the jth domain. Given…

利用两阶段抽样估计子总体均值AI 解读

In sample surveys, it is often desired to estimate the means of subpopulations or ‘domains of study’. If there is no list of the units comprising each domain, a two-phase sampling procedure may be employed. One possibility is to select a simple random sample of size n′ with the domain to which each unit belongs being determined. Then a simple random subsample of size n′j, is selected from the n′j, units found in the first phase sample to be members of the jth domain. Given…