A Note on Generalized Exponential Type Estimator for Population Variance in Survey Sampling

Recently a new generalized estimator for population variance using information on the auxiliary variable has been introduced by Asghar, Sanaullah & Hanif (2014). In that paper there was some inaccuracy in the bias and MSE expressions. In this paper, we provide the correct expressions for bias an...

Full description

Saved in:
Bibliographic Details
Published inRevista Colombiana de Estadística Vol. 38; no. 2; pp. 385 - 397
Main Authors Shabbir, Javid, Gupta, Sat
Format Journal Article
LanguageEnglish
Published Bogota Universidad Nacional de Colombia 01.07.2015
Subjects
Approximation
Auxiliary Variable
Bias
Efficiency
Estimation bias
linebreak Variance
Mean Square Error
Mean square errors
Variance analysis
Online AccessGet full text

Cover

More Information
Summary:Recently a new generalized estimator for population variance using information on the auxiliary variable has been introduced by Asghar, Sanaullah & Hanif (2014). In that paper there was some inaccuracy in the bias and MSE expressions. In this paper, we provide the correct expressions for bias and MSE of the Asghar et al. (2014) estimator, up to the first order of approximation. We also propose a new generalized exponential type estimator for population variance which performs better than the existing estimators. Four data sets are used for numerical comparison of efficiencies.
ISSN:0120-1751
2389-8976
DOI:10.15446/rce.v38n2.51667