Multivariate Estimators for Two Phase Sampling
نویسنده
چکیده
The auxiliary information has always been a source of improvement in estimation of certain population characteristics. Several estimators have been developed in single and two phase sampling which utilizes information on auxiliary variables as well as auxiliary attributes. The classical estimators which use information on auxiliary variables are the ratio and regression estimators as given in Hansen, Hurwitz [2]. The classical regression estimator of population mean is given as:
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