Ratio cum Median Based Modified Ratio Estimators with Known First and Third Quartiles

International Journal of Communication and Media Science

© 2018 by SSRG - IJCMS Journal

Volume 5 Issue 1

Year of Publication : 2018

Authors : Srija and Jambulingam Subramani

10.14445/2349641X/IJCMS-V5I1P101

How to Cite?

Srija and Jambulingam Subramani, "Ratio cum Median Based Modified Ratio Estimators with Known First and Third Quartiles," SSRG International Journal of Communication and Media Science, vol. 5,  no. 1, pp. 1-5, 2018. Crossref, https://doi.org/10.14445/2349641X/IJCMS-V5I1P101

Abstract:

 In this paper, some ratio cum median based modified ratio estimators with known quartiles of the auxiliary variable have been proposed. The performance of the proposed class of estimators is assessed with that of simple random sampling without replacement (SRSWOR) sample mean, ratio estimator and modified ratio estimators in terms of variance/mean squared errors. The performance of proposed class of estimators is illustrated with the help of certain natural population available in the literature. The percentage relative efficiency of the proposed class of estimators with respect to SRSWOR sample mean, ratio estimator and some of the existing modified ratio estimators are also obtained.

Keywords:

Auxiliary variable;Bias;Mean squared error; Natural population; Percentage relative efficiency; Simple random sampling.

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