期刊名称：Journal of Modern Applied Statistical Methods
出版年度：2011
卷号：10
期号：1
页码：7
出版社：Wayne State University
摘要：An improved ratio-cum-product type estimator of the finite population mean is proposed using known information on the coefficient of variation of an auxiliary variate and correlation coefficient between a study variate and an auxiliary variate. Realistic conditions are obtained under which the proposed estimator is more efficient than the simple mean estimator, usual ratio and product estimators and estimators proposed by Singh and Diwivedi (1981), Pandey and Dubey (1988), Upadhaya and Singh (1999), and Singh, et al., (2004). An empirical study supports theoretical findings.
关键词：Study variate; auxiliary variate; population mean; correlation coefficient; coefficient of variation
