[1]

[2]

INFDUM-augmented AR-EGARCH (1, 1) model

AR-EGARCH (1, 1) model

Coefficient

Z-value

Coefficient

Z-value

Mean equation

Constant

0.674

0.000

0.580

0.000

AR (1)

0.449

0.000

0.597

0.000

AR (5)

0.476

0.000

0.110

0.000

AR (11)

0.215

0.000

0.113

0.000

m1t

0.466

0.060

0.466

0.060

m3t

0.158

0.000

m6t

−0.376

0.047

−0.488

0.000

m7t

−0.916

0.000

−0.875

0.000

m8t

−1.485

0.000

−1.505

0.000

m9t

−1.725

0.002

−1.305

0.000

m10t

−0.759

0.000

Variance equation

Intercept

0.225

0.067

0.345

0.087

β1

0.118

0.057

0.125

0.033

β2

0.272

0.003

0.288

0.057

β3

0.925

0.000

0.928

0.000

β4

−0.223

0.036

Q (6)

6.066

0.194

5.192

0.268

Q (12)

10.546

0.394

15.547

0.124

Q2 (6)

1.268

0.867

2.446

0.647

Q2 (12)

3.993

0.957

5.287

0.873