An Improved Ratio-Type Variance Estimator by Using Linear Combination of Diferent Measures of Location
An Improved Ratio-Type Variance Estimator by Using Linear Combination of Diferent Measures of Location
In this research study, modified family of estimators is proposed to estimate the population variance of the study variable when the population variance, quartiles, median and the coefficient of correlation of auxiliary variable are known. The expression of bias and mean squared error (MSE) of the proposed estimator are derived. …