DEVELOPING THE HYBRID ARIMA- FIGARCH MODEL FOR TIME SERIES ANALYSIS. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 7, n. 3, p. 270–274, 2023. DOI: 10.33003/fjs-2023-0703-1868. Disponível em: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1868. Acesso em: 7 sep. 2025.