Cite this article:
Dubey and Kant (2004). On the application of dual to ratio estimator for estimating population mean. Journal of Ravishankar University (Part-B: Science), 17(1), pp.43-49.
Journal
of Ravishankar University Vol. 17 No. B (Science) 2004 pp 43-49 ISSN 0970-5910
On the application of dual to ratio estimator for estimating population mean
Vyas
Dubey and Surya Kant
Pt.
Ravishankar Shukla University.Raipur
MS : Received:
21/10/03 Revised
:
24/03/04 Accepted
:
24/05/04
Abstract: In this paper an optimum sample size for
dual to ratio estimator, proposed by Srivenkataramana (1980) and Bandopadhyay (1980),
has been suggested. In this case the dual to ratio estimator becomes more efficient.
However, the optimum sample size is larger than the sample size suggested by Srivenkataramana. In some practical situations it may not
be possible to take such
a large sample. Therefore, an estimator has been
proposed which is almost unbiased and is more elficient
than dual to ratio
estimator for a smaller
sample
size. A numerical
illustration has been
pre• sented to illustrate some mathematical findings:
Keywords : Bias, Mean Squared Error
(MSE).
Simple Random Sampling, Relative Absolute Bias (RAB), Relative Mean Squared,
Error (RMSE), Order of Approximation.
NOTE:
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