Use of Transformed Auxiliary Variablein Estimating the Finite Population MeanLakshmi N. Upadhyaya and Housila P. SinghIndian School of MinesDhanbad and Vikram UniversityUjjainIndiaSummaryFor estimating the finite population meanY of the study character y, an estimator using a transformedauxiliary variable has been defined. The bias and mean-squared error (MSE) of the proposed estimatorhave been obtained. The regions of preference have been obtained under which it is better than usualunbiased estimatory, the ratio estimatoryRyX=x, Sisodia and Dwivedi (1981) estimatorysyX Cx=x Cx and Singh and Kakran (1993) estimatoryk yX b2x=x b2x.Anempirical study has been carried out to demonstrate the superiority of the suggested estimator over theothers.Key words: Finite population mean; Transformed auxiliary variable; Bias; Mean