出版社：Dep. of Statistical Sciences "Paolo Fortunati", Università di Bologna
摘要：This paper suggested a generalized class of estimators using information on two auxiliary va-riables and sampling fraction in simple random sampling. The bias and mean squared error for-mulae of suggested class have been derived under large sample approximation and compared with usual unbiased estimator and Singh’s (1967) ratio-cum-product estimator. The theoretical findings have been satisfied with an empirical study.
关键词：Study variable;two auxiliary variable;Bias;mean square error;simple random sampling
