Combined ratio estimator of the population total in stratified random sampling

摘要

This study aims to propose a new ratio estimator in stratified random sampling based on the Phanida estimator (2008). Theoretically, mean square error (MSE) has been used to indicate the quality of ratio estimators and to compare the efficiency with a former ratio estimator. This study shows that the proposed estimator has more efficiency than combined ratio estimator. Furthermore, a numerical example also has been provided to support the better theoretical result.