1.Halla la media: 1, 6, 9, 6, 18, 20
2.Halla la media: 2, 7, 2, 4, 7, 14
3.Halla la media: 1, 1, 1, 11, 15, 19
4.Halla la media: 15, 4, 14, 20, 18, 13
5.Halla la media: 9, 6, 20, 9, 11, 11
6.Halla la media: 10, 5, 20, 3, 5, 5
7.Halla la media: 5, 9, 5, 16, 15
8.Halla la media: 11, 15, 14, 18, 6, 8