USMAN, A.U.; TUKUR, K.; SULEIMAN, A.; ABDULKADIR, A.; IBRAHIM, H. The use of the weighted least squares method when the error variance is heteroscedastic. Benin Journal of Statistics, [S. l.], v. 2, n. 1, p. 85– 93, 2019. Disponível em: https://bjs-uniben.org/index.php/home/article/view/15. Acesso em: 17 jun. 2026.