Replication Variance Estimation for Two-Phase Stratified Sampling
نویسندگان
چکیده
In two-phase sampling, the second-phase sample is often a stratified sample based on the information observed in the first-phase sample. For the total of a population characteristic, either the double-expansion estimator or the reweighted expansion estimator can be used. Given a consistent first-phase replication variance estimator, we propose a consistent variance estimator that is applicable to both the doubleexpansion estimator and the reweighted expansion estimator. The proposed method can be extended to multiphase sampling.
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