| Model 1 |
|
| Diagnostic tests | Test statistic |
| Serial correlation | F = 0.0429 (0.838) |
| Normality test | χ2 (Chi-square) = 3.372 (0.185) |
| Heteroscedasticity | F = 0.962 (0.531) |
| Model 2 |
|
| Serial correlation | F = 0.0619 (0.415) |
| Normality test | χ2 (Chi-square) = 5.087 (0.335) |
| Heteroscedasticity | F = 0.931 (0.510) |