New calibration estimator based on two auxiliary variables in stratified sampling |
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Authors: | Nilgun Ozgul |
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Affiliation: | Hacettepe University, Department of Statistics, Beytepe, Ankara, Turkey |
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Abstract: | In recent years, calibration estimation has become an important field of research in survey sampling. This paper proposes a new calibration estimator for the population mean in the presence of two auxiliary variables in stratified sampling. The theory of new calibration estimator is given and optimum calibration weights are derived. A simulation study is carried out to performance of the proposed calibration estimator over other existing calibration estimators. The results reveal that the proposed calibration estimators are more efficient than other existing calibration estimators in stratified sampling. |
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Keywords: | Calibration estimation Cholesky decomposition Lagrange multiplier technique Multivariate auxiliary information Optimum weights Stratified sampling. |
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