Siregar AU, Lubis A, Darmana A, Suyanti RD. Analysis of Student Cognitive Ability using The K-Means Cluster and Rasch Model (Winsteps) on Chemical Materials through Zoom Meeting. Jurnal Komdik [Internet]. 2022 Jul. 31 [cited 2024 May 14];6(2):91-101. Available from: http://journal.univetbantara.ac.id/index.php/komdik/article/view/2474