“Cluster Analysis Using the Ward Algorithm for Grouping Regency City in Central Java Province Based on Poverty Indicators 2023”. J Statistika: Jurnal Ilmiah Teori Dan Aplikasi Statistika, vol. 18, no. 1, July 2025, pp. 830-9, https://doi.org/10.36456/jstat.vol18.no1.a10160.