Variable

Coefficient

Std. Error

t-Statistic

Prob.

C

1.1523

0.1633

7.0581

0.0000

$X_2^2\ast WG{T}^2$

0.0155

0.0235

0.6599

0.5132

$X_2\ast X_5\ast WG{T}^2$

−0.2125

0.3430

−0.6196

0.5391

$X_2\ast X_6\ast WG{T}^2$

−0.0095

0.0391

−0.2440

0.8085

$X_2\ast WG{T}^2$

−0.3471

0.9035

−0.3842

0.7029

$X_5^2\ast WG{T}^2$

0.5610

1.0057

0.5577

0.5802

$X_5\ast X_6\ast WG{T}^2$

−0.1320

0.4304

−0.3067

0.7607

$X_5\ast WG{T}^2$

4.7183

8.4056

0.5613

0.5778

$X_6^2\ast WG{T}^2$

0.0045

0.0498

0.0896

0.9291

$X_6\ast WG{T}^2$

0.2779

0.7837

0.3546

0.7247

$WG{T}^2$

−0.8451

9.8784

−0.0855

0.9323

R-squared

0.2829

Mean dependent var

0.8192

Adjusted R-squared

0.0991

S.D. dependent var

0.9291

S.E. of regression

0.8819

Akaike info criterion

2.7780

Sum squared resid

30.3303

Schwarz criterion

3.1986

Log likelihood

−58.4500

Hannan-Quinn criter

2.9382

F-statistic

1.5390

Durbin-Watson stat

1.5087

Prob (F-statistic)

0.1625