Tolong jawab pake caranya

8,8,8,8,9,9,9,9,9,10,10,11,11,11,11,12,12,13,13,14,14,14,14,15,15
nilai tengahnya = 11

Datanya diurutkan terlebih dahulu
8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 11, 11, 11, 11, 12, 12, 13, 13, 14, 14, 14, 14, 15, 15

Terus dicari yg tengahnya
Dapet hasilnya 11

Jadi jawabannya c. 11
Semoga membantu^^