A GENERAL CLASS OF ESTIMATORS UNDER MULTI PHASE SAMPLING

M. S. Ahmed; Atsu S. S.  Dorvlo

M. S. Ahmed , Atsu S. S. Dorvlo Department of Mathematics and Statistics, Sultan Qaboos University, P.O. Box 36, Al-Khoudh PC 123, Muscat, Sultanate of Oman. Statistics in Transition new series, vol. 10, 2009, 2, pages: 183-192 Published online: 1 October 2009

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ABSTRACT

This paper derives the general estimators for finite population mean using multivariate auxiliary information under multiphase sampling. Here a number of auxiliary variables are considered in each phase under general sampling design. The properties of these estimators are studied and the results are presented for simple random sampling without replacement (SRSWOR) scheme. Using a modified cost function the optimum sample sizes are also derived.

KEYWORDS

Multivariate auxiliary information; Multiphase sampling; Chain estimators

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