Variable

Coefficient

Std. Error

t-Statistic

Prob.

C

0.0507

0.0014

35.9036

0.0000

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

−0.0014

0.0021

−0.6812

0.4998

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

−0.0358

0.0201

−1.7756

0.0836

0.0042

0.0020

2.1135

0.0410

$X_2\ast WG{T}^2$

0.0782

0.0745

1.0499

0.3002

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

−0.0323

0.0467

−0.6927

0.4926

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

0.0092

0.0252

0.3640

0.7178

$X_5\ast WG{T}^2$

0.7115

0.5019

1.4175

0.1643

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

−0.0070

0.0025

−2.7539

0.0089

$X_6\ast WG{T}^2$

0.0079

0.0456

0.1747

0.8622

$WG{T}^2$

−1.2639

0.6730

−1.8781

0.0679

R-squared

0.7930

Mean dependent var

0.0469

Adjusted R-squared

0.7399

S.D. dependent var

0.0169

S.E. of regression

0.0086

Akaike info criterion

−6.4722

Sum squared resid

0.0029

Schwarz criterion

−6.0516

Log likelihood

172.8061

Hannan-Quinn criter

−6.3120

F-statistic

14.9427

Durbin-Watson stat

1.5444

Prob (F-statistic)

0.0000