Brp kh rata ratanya? Bantu jawab kak

Nilai 5 = 2
Nilai 6 = 3
Nilai 7 = 5
Nilai 8 = 4
Nilai 9 = 1

Data = 5, 5, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9
Jumlah data = 104
Banyak data = 2 + 3 + 5 + 4 + 1 = 15

Rata-rata = Jumlah data / banyak data
= 104 / 15
= 6,93