Variable

Coefficient

t-Statistic

Probability

Robust-t

Robust-Pr [b]

VIF [c]

Intercept

0.31966

4.195808

0.005943*

7.353267

0.000393*

-

Population

−3.038025

−8.255098

0.000132*

−10.294585

0.000002*

1.923088

Temperature

−0.006742

−2.649933

0.037747

−4.367938

0.004997

1.463664

Greenhouse gas emission

0.000027

2.722399

0.034257

4.62643

0.003897

2.416063