TY - JOUR T1 - A class of Hartley-Ross type unbiased estimators for population mean using ranked set sampling AU - Khan, Lakhkar AU - Shabbir, Javid PY - 2016 DA - June JF - Hacettepe Journal of Mathematics and Statistics PB - Hacettepe University WT - DergiPark SN - 2651-477X SP - 917 EP - 928 VL - 45 IS - 3 LA - en AB - In this paper, we propose a class of Hartley-Ross type unbiased esti-mators for estimating the finite population mean of the study variableunder ranked set sampling (RSS), when population mean of the auxil-iary variable is known. The variances of the proposed class of unbiasedestimators are obtained to first degree of approximation. Both theo-retically and numerically, the proposed estimators are compared withsome competitor estimators, using three different data sets. It is iden-tified through numerical study that the proposed estimators are moreeffcient as compared to all other competitor estimators. KW - Ranked set sampling KW - auxiliary variable KW - variance CR - . . UR - https://dergipark.org.tr/en/pub/hujms/issue//524456 L1 - https://dergipark.org.tr/en/download/article-file/644860 ER -