Maingo, Israel; Ravele, Thakhani; Sigauke, Caston - In: International Journal of Financial Studies : open … 13 (2025) 3, pp. 1-30
integrates statistical and machine learning techniques through a two-step approach. The ARMA(3,2) model was chosen as the optimal …, and ARMA(3,2)-EGARCH(1,1) was the best model according to the lowest evaluation criteria. Residual diagnostic results …-returns. Volatility persistence was also detected, confirming the persistence attributes of financial volatility. Thereafter, the ARMA(3,2 …
