Ratio Cum Median Based Modified Ratio Estimators with Known Skewness, and Coefficient of Variation

  IJMTT-book-cover
 
International Journal of Mathematics Trends and Technology (IJMTT)
 
© 2018 by IJMTT Journal
Volume-55 Number-5
Year of Publication : 2018
Authors : Srija and Jayalakshmi
  10.14445/22315373/IJMTT-V55P543

MLA

Srija and Jayalakshmi "Path Union and Double Path Union of CordialgraphsRatio Cum Median Based Modified Ratio Estimators with Known Skewness, and Coefficient of Variation", International Journal of Mathematics Trends and Technology (IJMTT). V55(5):322-330 March 2018. ISSN:2231-5373. www.ijmttjournal.org. Published by Seventh Sense Research Group.

Abstract
The present paper deals with some ratio cum median based modified ratio estimators forestimating the finite population mean with the linear combinations of known parameters of the auxiliary variable such as skewness, and Coefficient of variation. The efficiencies of the proposed estimators are assessed with that of simple random sampling without replacement (SRSWOR) sample mean and ratio estimator both by algebraically and numerically. From the numerical comparison it is observed that the proposed estimators perform better than the SRSWOR sample mean as well as the Ratio estimator..

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