Question

Nilai:6,7,8,9,10
frekwensi:1,2,3,5,4
rata rata nilai ulangan b.indomesia adalah ..

Answer 1

rata-rata = nilai x frekuensi : jumlah frekuensi
= ( 6 x 1 ) + ( 7 x 2 ) + ( 8 x 3 ) + ( 9 x 5 ) + ( 10 x 4 ) : 15
= 6 + 14 + 24 + 45 + 40 : 15
= 8,6

Answer 2

Rata" = (6x1)+(7×2)+(8x3)+(9x5)+(10x4) /15 = 8,6