A FAMILY OF ESTIMATORS FOR SINGLE AND TWO-PHASE SAMPLING USING TWO AUXILIARY ATTRIBUTES

Jhajj et al. (2006) proposed a general family of estimators and derived a general expression for mean square error of these estimators by using single auxiliary attribute. Hanif et al. (2009) proposed a more general form of Jhajj et al. (2006) family of estimators and derived expression for mean square error of particular estimators of proposed family by using "k" auxiliary attributes. In this paper we suggest some new estimators. We also derive the mean square error expression of Jhajj et al: (2006) estimator for the partial information case, using two auxiliary attributes. Mathematical comparisons of these estimators are made. An empirical study has also been conducted.