IMPROVEMENT FOR ESTIMATING POPULATION MEAN IN SIMPLE RANDOM SAMPLING SCHEME
Keywords:
Main Variable, Secondary Variable, Exponential Ratio Estimators, Bias, MSE, EfficiencyAbstract
This article, considers the improved population mean estimation without increasing the cost of the survey. An improved estimator for mean of population characteristic has been suggested which makes use of population median of main (study) variable. We study the sampling properties of the proposed estimator up to the approximation of order one. The least value of the mean squared error (MSE) for the optimum value of the constant of the suggested estimator has been obtained. The suggested estimator is compared with the competing estimators. The theoretical findings are justified with a numerical example. Through the numerical example we show the improvement of suggested estimator over other competing estimators.
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References
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