Abstract Abstract Variance estimators under several sample designs are proposed and compared when auxiliary information is available. Improvement of the bias and mean squared error over some estimators commonly used in practice is illustrated. A Monte Carlo comparison of the estimators is also presented. Key Words: RatioRegression estimatorsSRS sampling designOne PSU per stratum sampling designSuperpopulation model
Housila P. SinghRamkrishna S. Solanki