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• Gandge, S. N., Varghese, T. and Prabhu-Ajgaonkar, S. G. A note on modified product esti- mator, Pakistan Journal of Statistics 9 (3B], 31–36, 1993.
• Khoshnevisan, M., Singh R., Chauhan P., Sawan N. and Smarandache, F. A general family of estimators for estimating population mean using known value of some population param- eter(s), Far East Journal of Theoretical Statistics 22, 181–191, 2007.
• Pandey, B. N. and Dubey, V. Modified product estimator using coefficient of variation of auxiliary variate, Assam Statistical Rev. 2 (2), 64–66, 1988.
• Prasad, B. Some improved ratio type estimators of population mean and ratio in finite pop- ulation sample surveys, Communications in Statistics: Theory and Methods 18, 379–392, 1989.
• Singh G. N. On the improvement of product method of estimation in sample surveys, Jour. Ind. Soc. Agri. Statistics 56 (3), 267–265, 2003.
• Singh H. P. and Tailor, R. Use of known correlation coefficient in estimating the finite pop- ulation mean, Statistics in Transition 6, 555–560, 2003.
• Singh H. P., Tailor, R. and Kakran, M. S. An estimator of population mean using power transformation, J. I. S. A. S. 58 (2), 223–230, 2004.
• Sisodia, B. V. S. and Dwivedi, V. K. A modified ratio estimator using coefficient of variation of auxiliary variable, Journal of Indian Society Agricultural Statistics 33, 13–18, 1981.
• Upadhyaya, L. N. and Singh H. P. Use of transformed auxiliary variable in estimating the finite population mean, Biometrical Journal 41, 627–636, 1999.