Improvement in estimating population mean using two auxiliary variables in two-phase sampling

Rajesh Singh; Pankaj Chauhan; Nirmala Sawan; Florentin Smarandache

Improvement in estimating population mean using two auxiliary variables in two-phase sampling

Autori

Rajesh Singh Banaras Hindu University - Department of Statistics
Pankaj Chauhan DAVV Indore - School of Statistics
Nirmala Sawan DAVV Indore - School of Statistics
Florentin Smarandache University of New Mexico - Department of Mathematics

Parole chiave:

auxiliary variables, chain ratio-type estimator, bias, mean squared error

Abstract

This study proposes improved chain-ratio type estimator for estimating population mean using some known values of population parameter(s) of the second auxiliary character. The proposed estimators have been compared with two-phase ratio estimator and some other chain type estimators. The performances of the proposed estimators have been supposed with a numerical illustration.

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). Improvement in estimating population mean using two auxiliary variables in two-phase sampling. Italian Journal of Pure and Applied Mathematics, 28, 135–142. Recuperato da https://journals.uniurb.it/index.php/ijpam/article/view/6001