系数

估计值

标准误差

T统计值

Pr (>|t|)

${\beta }_0$

226.4085

11.2086

20.199

<2e−16

2.5622

0.2291

11.185

<2e−16

${\delta }_{20}$

−282.7789

36.4930

−7.749

1.54e−13

−861.3323

106.0454

−8.122

1.30e−14

${\delta }_{40}$

850.4821

47.3518

17.961

<2e−16

3.2559

0.3639

8.947

<2e−16

6.1015

0.6276

9.722

<2e−16

${\delta }_{41}$

−2.5073

0.2924

−8.574

5.95e−16