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Ratio Estimators Using Coefficient of Variation and Coefficient of Correlation

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  • Prayad Sangngam

Abstract

This paper introduces ratio estimators of the population mean using the coefficient of variation of  study variable and auxiliary variables together with the coefficient of correlation between the study and auxiliary variables under simple random sampling and stratified random sampling. These ratio estimators are almost unbiased. The mean square errors of the estimators and their estimators are given. Sample size estimation in both sampling designs are presented. An optimal sample size allocation in stratified random sampling is also suggested. Based on theoretical study, it can be shown that these ratio estimators have smaller MSE than the unbiased estimators. Moreover, the empirical study indicates that these ratio estimators have smallest MSE compared to the existing ones.

Suggested Citation

  • Prayad Sangngam, 2014. "Ratio Estimators Using Coefficient of Variation and Coefficient of Correlation," Modern Applied Science, Canadian Center of Science and Education, vol. 8(5), pages 1-70, October.
    • Handle: RePEc:ibn:masjnl:v:8:y:2014:i:5:p:70
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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