Some Efficient Estimators of Population Mean in Stratified Two-phase Random Sampling with Two Auxiliary Variables under Non-Response

Abstract

In chapter 1, the introduction about survey sampling, survey errors and use of supportive information in estimation has been deliberated. Further in chapter 1, the issues of non-response and different techniques dealing with non-response have been mentioned however Hansen and Hurwitz’s (1946) sub-sampling has been considered in more detail. In chapter 2, literature about some existing estimators for single-phase samplings has been provided. Various works of non-response have also been specified in chapter 2. In chapter 3, an estimator for mean estimation by Hansen and Hurwitz’s (1946) has been discussed. In chapter 4, we propose a generalized class of estimator utilizing two supportive variables to assess the mean of the population by Stratified two phase sampling expecting occurrence of non-response. The properties of the proposed class of estimators have been discussed in chapter 4. In chapter 5, conclusion has been drawn about the proposed generalized class of estimators, finally, it is shown that the proposed estimators are more efficient as compare to the existing estimators of literature.