Improved exponential estimator for population variance using two auxiliary variables

Rajesh Singh; Pankaj Chauhan; Nirmala Sawan; Florentin Smarandache

Improved exponential estimator for population variance using two auxiliary variables

Autori

Rajesh Singh Banaras Hindu University - Department of Statistics
Pankaj Chauhan D.A.V.V. Indore (M.P.) - School of Statistics
Nirmala Sawan D.A.V.V. Indore (M.P.) - School of Statistics
Florentin Smarandache University of New Mexico - Department of Mathematics

Parole chiave:

auxiliary information, exponential estimator, mean squared error

Abstract

In this paper, exponential ratio and exponential product type estimators using two auxiliary variables are proposed for estimating unknown population variance S²_y. Problem is extended to the case of two-phase sampling. Theoretical results are supported by an empirical study.

Cover of n°28 Italian Journal of Pure and Applied Mathematics

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Pubblicato

2011-07-19

Come citare

Singh, R., Chauhan, P., Sawan, N., & Smarandache, F. (2011). Improved exponential estimator for population variance using two auxiliary variables. Italian Journal of Pure and Applied Mathematics, 28, 101–109. Recuperato da https://journals.uniurb.it/index.php/ijpam/article/view/6008