Efficient exponential ratio estimator for estimating the population mean in simple random sampling

Authors : Emmanuel John EKPENYONG, Ekaette İnyang ENANG

Pages : 689-705

View : 30 | Download : 11

Publication Date : 2015-06-01

Article Type : Research Paper

Abstract :This paper proposes, with justification, two exponential ratio estimators of population mean in simple random sampling without replacement. Their biases and mean squared error are derived and compared with existing related ratio estimators. Analytical and numerical results show that at optimal conditions, the proposed ratio estimators are always more efficient than the regression estimator and some existing estimators under review. 
Keywords : Exponential ratio estimators, mean squared error, optimal conditions, efficiency, simple random sampling