Hitunglah rataan harmonis dari data 2,3,4,6

Kelas 9 Matematika
Bab Statistika

2, 3, 4, 6 → ada 4

Rata-rata harmonis
= 4/(1/2 + 1/3 + 1/4 + 1/6)
= 4/(18/36 + 12/36 + 9/36 + 6/36)
= 4/(45/36)
= 4 . 36/45
= 144/45
= 3 9/45
= 3 1/5