出版社：Dep. of Statistical Sciences "Paolo Fortunati", Università di Bologna
摘要：This paper addresses the problem of estimating the population mean of the study variate Y using information on two auxiliary variables X 1 and X 2 . A ratio-cum-product type exponential estimator has been suggested and its bias and mean squared error have been derived under large sample approximation. An almost unbiased ratio-cum-product type exponential estimator has also been derived by using Jackknife technique envisaged by Quenouille (1956). A generalized version of the ratio-cum-product exponential estimator has also been given along with its properties. Numerical illustration is given in support of the present study.
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