n

${\widehat{\eta }}_{\text{mean}}$

${\widehat{\theta }}_{mean}$

$\widehat{\eta }$ 的样本标准差

$\widehat{\theta }$ 的样本标准差

20

0.876

1.304

0.204

1.437

50

0.828

1.094

0.117

0.474

100

0.816

1.040

0.084

0.315

500

0.804

1.006

0.037

0.135