Variable

DF

Parameter Estimate

Standard Error

t Value

Pr > |t|

Intercept

1

539.53044

329.75800

1.64

0.1362

X₁

1

0.18331

0.14918

1.23

0.2503

X₂

1

−0.22901

0.21008

−1.09

0.3040

X₃

1

−0.00880

0.00385

−2.29

0.0482

X₄

1

18.30704

6.22727

2.94

0.0165

X₅

1

0.28746

0.06099

4.71

0.0011