nilai= 4,5,6,7,8,9,10. frekuensi= 2,6,10,6,6,4,1,1. tentukan nilai rata-rata data tersebut

4 x 2 = 8
5 x 6 = 30
6 x 10 = 60
7 x 6 = 42
8 x 6 = 48
9 x 4 = 36
10 x 11 = 110
——————+
....... 45 = 334

Rata-rata = 334 : 45
Rata-rata = 7,43