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Comparison of six almost unbiased ratio estimators.

M. Dalabehera; L. N. Sahoo — 1994

Qüestiió

In this paper, we compare six almost unbiased ratio estimators with respect to bias and efficiency for (i) finite populations, and (ii) infinite populations in which the joint distribution of the characters under study is bivariate normal.

On some strategies using auxiliary information for estimating finite population mean.

L. N. Sahoo; J. Sahoo; Mariano Ruiz Espejo — 1998

Qüestiió

This paper presents an empirical investigation of the performance of five strategies for estimating the finite population mean using parameters such as mean or variance or both of an auxiliary variable. The criteria used for the choices of these strategies are bias, efficiency and approach to normality (asymmetry).

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