Some Improved Estimators of Population Mean Under Systematic Sampling

Some estimators for a finite population mean under two-stage sampling using multivariate auxiliary information

In this paper, we have derived difference, regression and predictor estimators for two-stage sampling with unequal first-stage units using multivariate auxiliary information. The mean square error of these estimators have been derived. A numerical illustration is given for finding the relative comparisons. 2003 Elsevier Inc. All rights reserved.

Some Estimators for the Population Mean Using Auxiliary Information Under Ranked Set Sampling

Horvitz-Thompson estimator of population mean under inverse sampling designs

Inverse sampling design is generally considered to be appropriate technique when the population is divided into two subpopulations, one of which contains only few units. In this paper, we derive the Horvitz-Thompson estimator for the population mean under inverse sampling designs, where subpopulation sizes are known. We then introduce an alternative unbiased estimator, corresponding to post-st...

Improved Family of Estimators of Population Mean in Simple Random Sampling

Abstract: In this paper we have suggested a general procedure for estimating the population mean through defining a class of estimators. Many of the existing estimators are shown particular members of the proposed class of estimators. It has been shown to the first degree of approximation that mean squared error (MSE) of the proposed class of estimators are better than the competing ratio, regr...

A Family of Estimators for Estimating Population Mean in Stratified Sampling under Non-Response

Khoshnevisan et al. (2007) proposed a general family of estimators for population mean using known value of some population parameters in simple random sampling. The objective of this paper is to propose a family of combined-type estimators in stratified random sampling adapting the family of estimators proposed by Khoshnevisan et al. (2007) under non-response. The properties of proposed family...