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

12. Murthy, M. N. (1964). Product method of estimation, Sankhya: Indian Journal of Statistics, Series A, 26:69-74. 13. Shabbir, J. & Gupta, S. (2017). A generalized class of difference-type estimator for population median in survey sampling. Hacettepe Journal of Mathematics and Statistics 46 (5):1015 – 28. DOI: 10.15672/HJMS.201610614759. 14. Singh, S.(2003a). Advanced Sampling Theory and Applications: How Michael ‘ Selected ’ Amy. Volume I and II. Kluwer academics Publishers, the Netherlands. 15. Singh, S., Joarder, A. H. & Tracy, D. S. (2001). Median estimation using double sampling. 16. Australian and New Zealand Journal of Statistics 43 (1):33 – 46. DOI: 10.1111/1467- 842X.00153. 17. Singh, S., Singh, H. P. & Upadhyaya, L. N. (2007). Chain ratio and regression-type estimators for median estimation in survey sampling. Statistical Papers 48 (1):23 – 46. DOI: 10.1007/s00362-006-0314y. 18. Singh, H.P., Singh, S. & Puertas, S.M. (2003). Ratio-type estimators for the median of finite populations. Allegemeines Statistisches Archiv , 87, 369-382. 19. Singh, H.P. & Solanki, R.S. (2013). Some classes of estimators for the population median using auxiliary information. Communication in Statistics , 42, 4222-4238. 20. Robson, D. S. (1957). Application of multivariate polykays to the theory of unbiased ratio-type estimator, Journal of American Statistical Association, 52:511-522 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 49 ( F ) © 2021 Global Journals Version I N otes