<![CDATA[Estimators discussed in this paper are estimators that estimate a population mean with imputation method under double sampling design using regression estimators. Imputation methodsare used to estimate the missing data. This is a review of an article written by Thakur et. al [Journal of Reliability and Statistical Studies, 5(2): 21- 31]. There are three estimators that discussed and each of them is an unbiased estimator. The minimum variance of each estimator is compared in order to decide the most efficient estimator.]]>
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