reg tax

F(3, 25) = 1398.49 R-squared = 0.9941

gdp tfa imp

Durbin-Watson statistic (original) 0.430288

Durbin-Watson statistic (transformed) 1.253480

Prob > F = 0.0000 Adj R-squared = 0.9934

tax

Coef.

Std. Err.

t

P > t

95% CI下限

95% CI上限

gdp

0.094154

0.0072396

13.01

0.000

0.079244

0.1090646

tfa

0.0689634

0.0072256

9.54

0.000

0.0540821

0.0838448

imp

0.0972447

0.0152528

6.38

0.000

0.0658309

0.1286585

_cons

−3864.367

1650.576

−2.34

0.027

−7263.791

−464.9428