Model

Unstandardized Coefficients

Standardized Coefficients

t

Significance

95% Confidence Interval for B

B

Standard Error

Beta

Lower Bound

Upper Bound

Shaanxi

(Constant)

length of highways (km)

length of railways in operation (km)

−1.457E6

−6.998

10.488

315,898.881

87.929

3.728

−0.027

0.952

−4.611

−0.080

2.814

0.004

0.939

0.031

−2.230E6

−222.154

1.367

−683,735.040

208.157

19.609

Gansu

(Constant)

length of highways (km)

length of railways in operation (km)

−209,921.285

−38.688

3.087

50,903.989

5.983

0.498

−1.670

1.602

−4.124

−6.467

6.204

0.006

0.001

0.001

−334,478.858

−53.326

1.870

85,363.712

−24.049

4.305