Study of Different Models for Ranking Error in Ranked Set Sampling

Aparna Gurao, Vasant Nikam

Abstract: Ranked set sampling was first introduced by McIntyre (1952) for the purpose of estimating mean pasture and forage yields. McIntyres intension was to maintain the unbiasedness of simple random sampling while introducing the extra information provided by visual inspection. Ranked Set Sampling may not be as efficient as it should be if ranking is not perfect. This Paper discuses some possible models for ranking errors in ranked set sampling.

Keywords: Ranked set sampling, error functions, judgmental ranking, judgmental order statistic, true order statistic