Simulation Study for Nonparametric Regression Model with Quartic Kernel Function. Jurnal Varian, [S. l.], v. 9, n. 1, p. 29–38, 2026. DOI: 10.30812/varian.v9i1.4949. Disponível em: https://journal.universitasbumigora.ac.id/Varian/article/view/4949. Acesso em: 3 may. 2026.