Resampling Variance Estimation for a Two-Phase Sample
نویسندگان
چکیده
Two-phase sampling is often used in a wide variety of surveys. Variance estimation from a two-phase sample has been a subject of active research. The re-sampling method of variance estimation has been used for this problem. However, the method confronts a challenging problem when the first phase sampling fraction is high. In the extreme (but not uncommon) case some first-phase strata are take-all but there is subsampling at the second phase. This issue is studied for a real survey.
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