Some Improved Estimators in Double Sampling Using two Auxiliary Variables

Authors

Mohammad S. Ahmed, Department of Mathematics and Statistics, College of Science, Sultan Qaboos University, P.O.Box 36, Al-Khoud, 123 Muscat, Sultanate of Oman

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.

Recommended Citation

Ahmed, Mohammad S. (2014) Some Improved Estimators in Double Sampling Using two Auxiliary Variables, Sultan Qaboos University Journal For Science: Vol. 19: Iss. 2, 97-100.
DOI: https://doi.org/10.24200/squjs.vol19iss2pp97-100
Available at: https://squjs.squ.edu.om/squjs/vol19/iss2/3