Separate Ratio Estimators for the Population Variance in Stratified Random Sampling

Gamze Özel, Hülya Çingi and Merve Oğuz

Communications in Statistics - Theory and Methods, 2014, vol. 43, issue 22, 4766-4779

Abstract: We propose separate ratio estimators for population variance in stratified random sampling. We obtain mean square error equations and compare proposed estimators about efficiency with each other. By these comparisons, we find the conditions which make proposed estimators more efficient than others. It has been shown that proposed classes of estimators are more efficient than usual unbiased estimator. We find that separate ratio estimators are more efficient than combined ratio estimators for population variance. The theoretical results are supported by a numerical illustration with original data. A simulation study is also carried out to investigate empirical performance of estimators.

Date: 2014
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DOI: 10.1080/03610926.2012.729642

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