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Penjelasan dengan langkah-langkah:
Mean = rata-rata
=(30×9)+(31×6)+(32×10)+(33×4)+(34×5)+(35×6) / 9+6+10+4+5+6
= 270+186+320+132+170+210 / 40
= 1288/40
= 32,2
Median = angka tengah
= 40/2
= 20
angka ke 20 adlh 32
Modus = angka yang sering muncul
angka yg sering muncul adalah 32.