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Generalized Class of Dual to Product cum Dual to Ratio estimator for Population Mean with Imputation of Missing Data in Two-Phase Sampling Scheme

Krishnajyothi Nath, B.K. Singh


This paper aims to deal with the problem of non-response in the study variable, by proposing a generalized class of estimator for estimating population mean under the framework of two-phase sampling design by using auxiliary information and also the expressions for bias and mean square error are derived. Further, theoretical results stating supremacy of the proposed estimators, over the existing estimators by empirical illustration based on different data sets are shown.


Imputation, Bias, Mean Square Error (MSE), Missing data, Large Sample Approximation, Simple Random Sampling without Replacement (SRSWOR), Efficiency.

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