期刊名称：Journal of Reliability and Statistical Studies
印刷版ISSN：0974-8024
电子版ISSN：2229-5666
出版年度：2008
卷号：1
期号：1
页码：42-47
出版社：Ankur Printing Palace
摘要：This paper deals with the estimation of square of coefficient of variation which is comparatively a more stable quantity using ratio type estimator. Its bias and mean square error (MSE) are found to the first order of approximation. An optimum subclass of estimators is also obtained and a comparative study with the conventional square of sample coefficient of variation estimator is made. It has further been shown that estimation of parametric values involved in the optimum subclass does not reduce the efficiency of the proposed estimator. An empirical example showing the increased efficiency of proposed estimator over square of sample coefficient of variation estimator is also included as an illustration
关键词：Qualitative Auxiliary Information; Coefficient of Variation; Estimator; Bias; Mean ;Square Error; Order of Approximation; Bounds; Finite Population Correction; Efficiency
