Estimator

Bias

MSE

Relative Efficiency

$\overline{y}$

5768.43

12,979.1

100.00

${\overline{y}}_R$

12,725.05

28,632.47

45.33

${\overline{y}}_p$

9954.08

22,397.42

57.95

${\overline{y}}_z$

5716.71**

12,861.57**

101.00**