Explanatory Variable

Option: I

Option: II

Option: III

Option: IV

Option: V

β

T-Statistics

β

T-Statistics

β

T-Statistics

β

T-Statistics

β

T-Statistics

Constant

35.369**

2.314

33.153**

2.129

37.639**

2.326

32.068*

1.908

31.204*

1.843

DBUS(-1)

3.361***

6.203

DBUS(-2)

3.196***

5.987

2.825***

4.826

3.189***

5.953

3.155***

5.824

FDIG

2.953***

10.680

2.958***

10.609

3.066***

10.748

2.962***

10.572

2.960***

10.554

EASE

0.556**

2.440

0.610***

2.659

0.457*

1.781

0.621***

2.609

0.639***

2.645

LNDRAT

−0.744***

−3.054

−0.789***

−3.120

−0.710**

−2.516

−0.790***

−3.119

−0.788***

−3.107

TIMERQ

0.025

0.173

0.028

0.189

PCI

−1.24E-07

−0.451

DCPS

0.095

1.306

Adjusted R²

0.4513

0.4479

0.4521

0.4465

0.4453

F-statistic

42.0216

41.1499

36.6710

36.4895

32.7933

Akaike Info Criterion

10.2568

10.2672

10.2720

10.2722

10.2771

Schwarz Criterion

10.3466

10.3575

10.3736

10.3726

10.3871

H-Q Criterion

10.2925

10.3030

10.3123

10.3119

10.3204

D-W Statistic

0.5017

0.5011

0.5028

0.5024

0.5018