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A Class of Improved Estimators for Estimating Population Mean Regarding Partial Information in Double Sampling
Dr. Saleha Shouket, Hina Khan, Aamir Sanaullah
Volume 12 Issue 14
Global Journal of Science Frontier Researc
Volume 12 Issue 14
Global Journal of Science Frontier Researc
In this paper a class of improved estimators has been proposed for estimating population mean in two phase (double) sampling when only partial information is available on either of two auxiliary variables. Under simple random sampling (SRWOR), expressions of mean square error and bias have been derived to make comparison of suggested class with wide range of other estimators. Empirical study has also been given using five different natural populations. Empirical study confirmed that the suggested class of improved estimators is more efficient under percent relative efficiency (PRE) criterion.
