Ratio Estimator Of Population Mean In Stratified Ranked Set Sampling

This article is on the basis of Samawi and Muttlak (1996) of ratio estimator of population mean using ranked set sampling,and Kadilar and Cingi (2003) of ratio estimator of population mean using stratified random sampling,we put forward to apply ranked set sampling to each floor of the stratified sampling to get a ratio estimator of population mean. We are from two aspects of theory and simulation data shows that in terms of the ratio estimation, the new sampling method is more effective than the original sampling method.