CLUSTER ANALYSIS OF DATA OF SCORE RATING SYSTEM (BASED ON THE SUBJECT OF “MATHEMATICS”)
Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ Obrazovanie, pedagogičeskie nauki/Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ: Obrazovanie, pedagogičeskie nauki