Some Estimation Procedures in Presence of Non-Response in Two-Phase Sampling

The present investigation deals with the problem of estimation of population mean in presence of non-response under two-phase (double) sampling. Following the technique of sub-sampling of non-responding group adopted by Hansen and Hurwitz (1946) and using information on two auxiliary variables, four general classes of estimators have been suggested for four different situations of non-response and their properties are studied. It is shown that several estimators can be generated from our proposed classes of estimators. Comparisons of the proposed strategies with some contemporary estimators of population mean in presence of non-response are carried out. The results obtained are illustrated numerically through empirical studies which present the effectiveness of the suggested classes of estimators.

Sri Lankan Journal of Applied Statistics 2015;16(1):41-68