@article{paperid:1062944, author = {Eftekharian, Abbas and Razmkhah, Mostafa}, title = {A unified ranked set sampling for estimating the population mean}, journal = {Istatistik}, year = {2016}, volume = {9}, number = {3}, month = {November}, issn = {1300-4077}, pages = {107--118}, numpages = {11}, keywords = {ranking error; order statistics; normal distribution; maximum likelihood estimator; cost analysis}, }