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This  paper  discusses   on  the  estimation  of  a finite  population  mean  using  a  two-phase  sampling mechanism  in the presence of two auxiliary variables. Under  the usual  predictive  approach described by Basu (1971), attention is focused on the creation of a general class of estimators.

A CLASS OF ESTIMATORS FOR PREDICTIVE ESTIMATION OF POPULATION MEAN IN TWO-PHASE SAMPLING