Coef

std err

t

P > |t|

Intercept

0.194

0.125

−0.155

0.881

X₁

−1.62

1.569

−1.034

0.031

X₂

−1.50

0.467

−3.232

0.012

X₄

2.2646

1.474

1.537

0.043

X₆

0.7928

0.496

1.600

0.048