Maya Ifra Shobia, and Yenni Kurniawati. “Grouping Regencies/Cities in West Sumatra Province Based on People’s Welfare Indicator Using Biplot Analysis”. UNP Journal of Statistics and Data Science, vol. 3, no. 3, Aug. 2025, pp. 355-62, doi:10.24036/ujsds/vol3-iss3/407.