Figure 2

Stability test for the NARDL. (a) CUSUM test, (b) CUSUM of squares test. The CUSUM and CUSUM of squares were not beyond 95%CI at various time suggested the efficacy and stability of the model.
Stability test for the NARDL. (a) CUSUM test, (b) CUSUM of squares test. The CUSUM and CUSUM of squares were not beyond 95%CI at various time suggested the efficacy and stability of the model.