Penjelasan
Rata rata = hasil jumlah data / jumlah data
rata rata = 40 + 20 + 60 + 100 + 80 / 5
rata rata = 300 / 5
rata rata = 60 ( B )
Rata rata = hasil jumlah data / jumlah data
rata rata = 40 + 20 + 60 + 100 + 80 / 5
rata rata = 300 / 5
rata rata = 60 ( B )