A CLASS OF RATIO-CUM-PRODUCT TYPE ESTIMATORS UNDER DOUBLE SAMPLING IN THE PRESENCE OF NON-RESPONSE

Authors : Sunil KUMAR, Hp SİNGH, Eep BHOUGAL, Rahul GUPTA

Pages : 589-599

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Publication Date : 2011-04-01

Article Type : Research Paper

Abstract :In the present paper, we have proposed a class of ratio – type estimators for estimating the population mean Y¯ of the study variate y under double sampling in the presence of non-response, where information on the auxiliary variable is not known. For an appropriate weight a and a good range of α values, it is found that the proposed class of estimators is more efficient than some estimators which are obtained by applying congenial values of a and α. Comparison of the proposed class of estimators with other estimators is also worked out. Also the good range of α is obtained empirically for different values of a and k.
Keywords : Study variate, Auxiliary variate, Non response, Double sampling, Bias, Mean squared error, 2000 AMS Classification 62 D 05