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This paper suggests a generalized class of estimators for population mean ofthe qualitative study variable in simple random sampling using information onan auxiliary variable. Asymptotic expressions of bias and mean square error ofthe proposed class of estimators have been obtained. Asymptotic optimumestimator has been investigated along with its approximate mean square error.It has been shown that proposed generalized class of estimators are moreefficient than all the estimators considered by Singh et al. (2010) in case ofqualitative study variable. In addition theoretical findings are supported byan empirical study based on real population to show the superiority of theconstructed estimators over others.

Generalized class of estimators for finite population mean when study variable is qualitative in nature