Nuryalita, DessyEfendi, RustamSirait, Haposan2014-03-252014-03-252014-03-25Rangga Dwijunanda Putrahttp://repository.unri.ac.id/xmlui/handle/123456789/5847This paper discusses three estimators for the population mean in the stratified random sampling, the exponential ratio estimator and exponential product estimator proposed by Singh [4] and combination exponential ratio-product estimator proposed by Singh and Vishwakarma [3]. The three estimators are biased estimators. The most efficient estimator is an estimator that has the smallest mean square error obtained by comparing the mean square error of each estimator.otherratio estimatorproduct estimatorbiasstratified random sampling and mean square errorOther