A Super Population Model Approach to Imputation for Estimating Population Mean

Abstract

In this paper Super population model based study of some imputation strategies have been proposed for estimating population mean under non -response, considering population is of dynamic nature, a more practical and relevant approach and hence it has been assumed that each unit of the study variable is following Polynomial regression model. Bias’s and MSE’s have been obtained under model-based approach; also, empirical comparisons of these strategies have been done with some special cases of PRMs, so as to observe their performance over varying non-response rates, Robustness of the estimators have been checked under misspecification of the models.