Term

Estimate

Std. Error

t-value

p-value

Central

constant

0.00008187868

0.0001184322

0.6913549

0.24471

QAR(1)

0.2931358

0.0251979805

11.6333058

0.0000

QAR(2)

0.1329694

0.0227462397

5.8457766

0.0000

Scale

constant

0.002646745

0.0001448444

18.273030

0.0000

QAR(1)

0.174948799

0.0273538824

6.395758

0.0000

QAR(2)

0.067533867

0.0231822250

2.913175

0.0018