hijriah, H., Ruliana, and Rahmat Hidayat. “Application of Truncated Spline Nonparametric Regression to Modeling the Factors Affecting Economic Growth in South Sulawesi Province”. VARIANSI: Journal of Statistics and Its Application on Teaching and Research, Vol. 8, no. 02, Sept. 2026, pp. 198-0, doi:10.35580/variansiunm629.