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Generalized chain type estimators for ratio of two population means using two auxiliary characters in the presence of non-response

B. B. Khare, U. Srivastava, Kamlesh Kumar


Two generalized chain type estimators for the ratio of two population means of study characters using auxiliary and additional auxiliary characters in the presence of non-response have been proposed. The proposed estimators have been found to be more efficient than the relevant estimators for the fixed sample sizes ( n', n ) and also for the fixed cost, under the specified conditions. The proposed estimators have also less total cost incurred in comparison to the cost incurred in the case of relevant estimators for the specified precision. An empirical study has been given in support of the problem under investigation.


Double sampling, non-response, relative bias, mean square error, auxiliary characters.

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