In this paper, stratified median ranked set sampling (SMRSS) method is suggested
for estimating the population mean. The SMRSS is compared with simple random
sampling (SRS), stratified simple random sampling (SSRS) and stratified ranked
set sampling (SRSS). It is shown that SMRSS estimator is an unbiased of the
population mean of symmetric distributions and is more efficient than its
counterparts using SRS, SSRS and SRSS.