Video solusi : Andi mencatat hasil penjualan novelnya selama setahun sebagai berikut: Januari = 10 novel Februari = 16 novel Maret = 12 Novel April = 12 novel Mei = 16 novel Juni = 17 novel Juli = 11 novel Agustus = 11 novel September = 9 novel Oktober = 10 novel November = 8 novel Desember = 12 novel Rata - rata jumlah novel Andi yang terjual, yaitu ...