Variable

Coefficient

Std. Error

t-Statistic

Prob.

C

0.589*

0.054

10.825

0.000

Operating Expenditure (opex)

0.208

0.727

0.286

0.776

Unit Investment (invest)

0.6514

0.453

1.438

0.159

Unit Salary (salary)

−1.983*

0.701

−2.828

0.007

DUM

−0.055***

0.028

−2.006

0.052

R-squared

0.831

Mean dependent variable

0.223

Adjusted R-squared

0.814

SD dependent variable

0.155

S.E. of regression

0.067

Akaike info criterion

−2.468

Sum squared resid

0.174

Schwarz criterion

−2.265

Log likelihood

59.298

Hannan-Quinn criterion

−2.393

F-statistic

47.974

Durbin-Watson stat

0.691

Prob (F-statistic)

0.000