Variable

Estimate

Std. Error

t-value

Pr (>|t|)

C

12.82225

0.860958

14.89300

0.0000

X1

0.397951

0.049129

8.100042

0.0000

X2

0.325390

0.028611

11.37297

0.0000

X3

−0.441111

0.042522

−10.37367

0.0000

X4

0.166147

0.018166

9.145813

0.0000

X6

0.180135

0.006046

29.79430

0.0000