AISM 54, 659-666
© 2002 ISM

Estimation of the size and mean value of a stigmatized characteristic of a hidden gang in a finite population : A unified approach

Raghunath Arnab1 and Sarjinder Singh2

1Department of Statistics, University of Durban-Westville, Private Bag-X54001, Durban-4000, South Africa, e-mail:
2Department of Mathematics and Statistics, University of Saskatchewan, Saskatoon, SK, Canada S7N 5E6,

(Received May 1, 2000; revised April 25, 2001)

Abstract.    We consider the problem of estimating the size and the mean value of a stigmatized quantitative characteristic of a sub-group (or hidden gang) in a finite population using a unified approach. The proposed method may be useful in estimating the proportion and the mean income of terrorists, "hijackers" or "freedom fighters" of a particular country, including those who operate across different countries.

Key words and phrases:    Randomized response, sampling strategies, estimation of proportion, estimation of mean.

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