Estimator

Ratio

MSE

1.5

2.8

4.8

1.5

2.8

4.8

(3)

1.73

2.37

2.64

1.68E−08

3.32E−08

3.88E−08

(4)

1.64

2

1.97

1.72E−08

1.97E−08

1.37E−08

(5)

0.98

0.79

0.64

1.24E−08

1.54E−08

1.50E−08

(6)

1.29

1.38

1.28

1.26E−08

9.93E−09

6.75E−09

(7)

1.06

1.43

1.55

1.53E−08

1.08E−08

8.95E−09

(9)

1.06

1.42

1.56

1.93E−08

9.98E−09

7.50E−09