(1) 变量

(2) 估计值

(3) 标准差

(4) R²

${\beta }_1$

3.279

0.0569

99.04

${\beta }_2$

−1.2567

0.0609

${\beta }_3$

−0.9948

0.3509

${\beta }_4$

−0.0531

0.2208