Saddam, Damisa A.; Abdullahi, Jamila; Nura, Umar - In: CBN journal of applied statistics 9 (2018) 2, pp. 1-16
This paper incorporates the variance of auxiliary variables to propose three improved ratio estimators of population mean. To enhance the efficiency of the proposed ratio estimators, a linear combination of the population coefficient of variation, kurtosis, skewness and the population variance...