Efficient Estimation of Normal Population Mean

On Efficient Estimation for the Log-normal Model Mean

ON EFFICIENT ESTIMATION FOR THE LOG-NORMAL MODEL MEAN Winston A. Richards, Department of Mathematics and Statistics The Pennsylvania State University, Harrisburg, USA *Ashok Sahai, Robin Antoine, Letetia Addison, Department of Mathematics & Computer Science; Faculty of Science & Agriculture St. Augustine Campus; The University of The West Indies. Trinidad & Tobago; West Indies. And M. Raghunadh...

Estimation of the Multivariate Normal Mean under the Extended Reflected Normal Loss Function

Some Improvment in the Estimation of Population Mean in Cluster Sampling

Gupta and Shabbir (2008) have suggested an alternative form of ratio-type estimator for estimating the population mean. In this paper, we introduced new estimators by mixing two, stratified and cluster sampling method. Then we improved these estimators by using auxiliary variables and introducing new estimators. For sampling in infinite populations with a high geographic dispersion, the populat...

Design Based Estimation of Finite Population Mean in Ranked Set Sampling

Abstract. This Article introduce method of ranked set sampling with replacement (RSSWR) in finite population and express how to computing samples of inclusion probability for this method. The Horvitz-Thompson and Hansen-Hurwtz estimators using auxiliary variables introduce for this design and use 2011-12 Urban Households Income and Income and Expenditure survey data, gathered for Tehran by stat...

Efficient Mean Estimation in Lognormal Linear Models

Lognormal linear models are widely used in applications, and many times it is of interest to predict the response variable at the original scale for a new set of covariate values. In this paper we consider the problem of efficient estimation of the conditional mean of the response variable at the original scale for lognormal linear models. Several existing estimators are reviewed, including the...