Abstract #301375

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JSM 2003 Abstract #301375
Activity Number: 234
Type: Topic Contributed
Date/Time: Tuesday, August 5, 2003 : 10:30 AM to 12:20 PM
Sponsor: Section on Survey Research Methods
Abstract - #301375
Title: Efficient Replication Variance Estimation for Two-phase Sampling
Author(s): Randy R. Sitter*+ and Jae-Kwang Kim
Companies: Simon Fraser University and Hankuk University of Foreign Studies
Address: Dept. of Math & Stat., Burnaby, BC, V5A 1S6, Canada
Keywords: double sampling ; jackknife ; regression estimator
Abstract:

Variance estimation for the regression estimator for a two-phase sample is investigated. A replication variance estimator with number of replicates equal to or slightly larger than the size of the second-phase sample is developed. In surveys where the second-phase sample is much smaller than the first-phase sample, the procedure has practical advantages. The proposed method can be directly applied to variance estimation for the double expansion estimator and the reweighted expansion estimator. In these cases, the proposed method is asymptotically equivalent to the full jackknife, but uses a smaller number of replications.

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