Table 10 Non-parametric tests results.
Test (RF) | Adj t-stat | Test critical value | Prob | R2 | Adj R2 | ||
|---|---|---|---|---|---|---|---|
1% level | 5% level | 10% level | |||||
ADF | − 8.590281 | − 3.498439 | − 2.891234 | − 2.582678 | 0 | 0.9351 | 0.9293 |
Philips–Perron | − 45.54484 | − 3.493747 | − 2.8892 | − 2.581596 | 0.0001 | 0.8147 | 0.813 |
Test (DTs) | Adj t-stat | Test critical value | Prob | R2 | Adj R2 | ||
|---|---|---|---|---|---|---|---|
1% level | 5% level | 10% level | |||||
ADF | − 8.702216 | − 3.498439 | − 2.891234 | − 2.582678 | 0 | 0.9379 | 0.9323 |
Philips–Perron | − 47.32203 | − 3.493747 | − 2.8892 | − 2.581596 | 0.0001 | 0.8165 | 0.8148 |
Test (MLP) | Adj t-stat | Test critical value | Prob | R2 | Adj R2 | ||
|---|---|---|---|---|---|---|---|
1% level | 5% level | 10% level | |||||
ADF | − 8.588913 | − 3.498439 | − 2.891234 | − 2.582678 | 0 | 0.937 | 0.9314 |
Philips–Perron | − 49.37702 | − 3.493747 | − 2.8892 | − 2.581596 | 0.0001 | 0.8215 | 0.8198 |
Test (DNN) | Adj t-stat | Test critical value | Prob | R2 | Adj R2 | ||
|---|---|---|---|---|---|---|---|
1% level | 5% level | 10% level | |||||
ADF | − 8.539113 | − 3.498439 | − 2.891234 | − 2.582678 | 0 | 0.9336 | 0.9277 |
Philips–Perron | − 45.26102 | − 3.493747 | − 2.8892 | − 2.581596 | 0.0001 | 0.8163 | 0.8145 |