Global Journal of Science Frontier Research, F: Mathematics and Decision Science, Volume 21 Issue 4

A: The median estimator (per unit) due to Gross (1980) is given by � = � � � � = 2 2 (1) B: The median estimator (classical ratio) by Kuk and Mak (1989) is given by � = � � � � � � � = 2 (1 − 1 ) � � � = 2 � 2 + 2 (1 − 2 1 )� (2) C: The median estimator (exponential ratio) following Bahl and Tuteja (1991) is given by � = � � − � + � � � � � = 2 (3 − 4 1 ) 8 � � � = 2 � 2 + 2 4 (1 − 4 1 )� (3) D: The median estimator (chain ratio-type) by Kadilar and Cingi (2003) is given by � = � � � � 2 � � � = 2 (1 + 2 1 ) � � � = 2 � 2 + 4 2 (1 + 1 )� (4) E: The median estimator (product-type) following Robson (1957) and Murthy (1964) is given by � = � � � � � � � = 2 1 � � � = 2 � 2 + 2 (1 + 2 1 )� (5) Towards the Efficiency of the Ratio Estimator for Population Median in Survey Sampling 1 Global Journal of Science Frontier Research Volume XXI Issue IV Year 2021 39 ( F ) © 2021 Global Journals Version I N otes