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Apr 27, 2017
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Feb 1, 2015
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Abstract

Dash and Mishra [1] suggested an improved class of estimators without defining the optimum estimator. However, they gave the wrong Taylor’s series expression of their class of estimator and their minimum mean squared error expressions are also incorrect. Here we show that Ahmed et al.’s [2] class of chain estimators is more efficient than Dash and Mishra’s [1], with minimum mean squared error.

 

 

Keywords

Chain based estimator Double sampling Auxiliary variable Mean square error.

Article Details

References

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