An efficiency comparison of dual ratio and product estimatiors |
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| Authors: | D.N. Shan M.R. Gupta |
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| Affiliation: | Department of Statistics , Sardar Patel University , Vallabh Vidyanagar, 568 120, India |
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| Abstract: | The present paper investigates the efficiency of the dual ratio estimator under the super population model with uncorrelated errors and a gamma-distributed auxiliary variabble. It is found that the dual ratio estimator is more efficient than the product estimator when the auxiliary variable has a gamma distribution with parameter greater than or equal to one, in the case when the regression is through the origin or when the product of intercept and slope is positive. |
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| Keywords: | dual ratio estimator product estimator unbiased product estimator superpopulation model |
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