Al-Omari, Amer; Bouza, Carlos; Herrera, Carmelo - In: Quality & Quantity: International Journal of Methodology 47 (2013) 1, pp. 353-365
This paper considers three ratio estimators of the population mean using known correlation coefficient between the study and auxiliary variables in simple random sample when some sample observations are missing. The suggested estimators are compared with the estimators of Singh and Horn (Metrika...