On Some Families of Estimators of Variance of Post-Stratified Sample Mean Using Two Auxiliary Variables |
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Authors: | Saadia Masood Javid Shabbir |
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Institution: | 1. Department of Statistics, Quaid-i-Azam University, Islamabad, Pakistansaadia2masoood@yahoo.com;3. Department of Statistics, Quaid-i-Azam University, Islamabad, Pakistan |
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Abstract: | In this article, we propose some families of estimators for finite population variance of post-stratified sample mean using information on two auxiliary variables. The families of estimators are discussed in their optimum cases. The MSE of these estimators are derived to the first order of approximation. The percent relative efficiency of proposed families of estimators has been demonstrated with the numerical illustrations. |
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Keywords: | Families of estimators Auxiliary variables Post-stratified sampling Efficiency |
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