Estimation of Population Mean in Two-Phase Sampling. Butt, N., S. SSRN Electronic Journal, 6(2):198-200, International Digital Organization for Scientific, 2012.
Estimation of Population Mean in Two-Phase Sampling [pdf]Paper  doi  abstract   bibtex   
A new estimator for population mean has been proposed in two phase sampling by using information of multiple auxiliary variables. The minimum variance of the proposed estimator has been obtained. Comparison has also been made with some available estimators of two phase sampling.

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