• Tuesday, October 27, 2015

  • CUI

  • Lahore Campus

The use of auxiliary information is well-known to improve the precision of the estimate of the population  mean for the study variable. We are usually interested in estimating the population mean for the variable of   interest when the information of auxiliary variable(s) is considered. The auxiliary variable is correlated   with the variable of interest, when is already available or can be easily observed. The ratio, product,   regression and exponential (ratio, product) type estimators have been developed using the auxiliary   information.

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Auxiliary variable, Ratio estimator, Product