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Diana, G. and Tommasi, C. (2002) Estimation for ratio of two population means in double sampling. [Working Paper] WORKING PAPER SERIES, 5/2002 . , PADOVA (Inedito)

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Abstract (english)

Using two-phase sampling scheme, a general class of estimators for ratio and product of two finite population means is proposed. This class depends on the sample means and variances of two auxiliary variables. The minimum variance bound for any estimator in the class is provided (up to terms of order η-1). It is shown that there exists at least a chain regression type estimator which reaches this minimum. A numerical illustration is also given.


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EPrint type:Working Paper
Anno di Pubblicazione:April 2002
Key Words:two-phase sampling; auxiliary variable; regression type estimator.
Settori scientifico-disciplinari MIUR:Area 13 - Scienze economiche e statistiche > SECS-S/01 Statistica
Struttura di riferimento:Dipartimenti > Dipartimento di Scienze Statistiche
Codice ID:7314
Depositato il:12 Dec 2014 12:10
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