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IJSTR >> Volume 1 - Issue 7, August 2012 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Improvement Over General And Wider Class of Estimators Using Ranked Set Sampling

[Full Text]



V. L. Mandowara, Nitu Mehta (Ranka)



Key Words: Ranked set sampling, General and wider class of estimator, Auxiliary variable, Mean square error, Efficiency.



Abstract- In this paper, Improvement over general and wider class of estimators of finite population means using ranked set sampling is investigated. Ranked set sampling (RSS) was first suggested to increase the efficiency of estimator of the population mean. The first order approximation to the bias and mean square error (MSE) of the investigated estimators are obtained. Theoretically, it is shown that these suggested estimators are more efficient than the general and wider class of estimators in simple random sampling.



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