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New calibration estimator based on two auxiliary variables in stratified sampling
Authors:Nilgun Ozgul
Institution:Hacettepe University, Department of Statistics, Beytepe, Ankara, Turkey
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.
Keywords:Calibration estimation  Cholesky decomposition  Lagrange multiplier technique  Multivariate auxiliary information  Optimum weights  Stratified sampling  
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