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A Class of Exponential Regression type Estimators of Population Mean in Two- Phase sampling

A. Chatterjee, A. Bandyopadhyay, G.N. Singh


This article deals with the problems of efficient estimation of population mean in two-phase (double) sampling. Using information on two auxiliary variables, a class of chainexponential to regression type estimators has been proposed and its properties are studied under two different structures of two-phase sampling. Superiority of suggested class of estimators over some existing ones is established through numerical illustration and graphical simulation. Suitable recommendations to the survey statistician are also made.


Double sampling, study variable, auxiliary variable, chain-type, Exponential, regression, bias, variance, efficiency.

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