Erda, Gustriza, Sartika Mega Aulia, and Zulya Erda. “Classifiying The Factors Influencing The Human Development Index in Riau Province Using Principal Component Analysis”. Parameter: Journal of Statistics 2, no. 3 (January 2, 2023): 17-23. Accessed November 21, 2024. https://bestjournal.untad.ac.id/index.php/parameter/article/view/16203.