Developement of Effective Estimation Strategy for Population Mean in Two-Phase Sampling

This paper focuses on the problem of estimating the population mean in two-phase (double) sampling. We have proposed a class of chain exponential ratio and regression type estimators of population mean utilizing the information on two auxiliary variables. The optimum property of the estimators has been discussed. The dominance of the suggested estimator over some contemporary estimators of population mean has been established through empirical investigations carried over the data set of some natural population and artificially generated population. Proper recommendations are helped to the survey statistician in real field.