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Estimation of ratio and product of two population means using exponential type estimators in sample surveys

Kamlesh Kumar, Usha Srivastava


This paper presents the exponential type estimators for estimating the ratio and product of two population means in sample surveys in case of known population mean of auxiliary character and also in case of unknown population mean of auxiliary character. The expressions for mean square error of the proposed estimators have been derived. The theoretical and empirical studies have been done to demonstrate the superiority of the proposed estimators over the other estimators.


Mean square error, study character, auxiliary character, two phase sampling.

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