8.0 ; 8.1 ; 7.3 ; 7.7 ; 7.0 ; 6.9. Rata-ratanya berapa

rata rata = (8.0+8.1+7.3+7.7+7.0+6.9) : 6
              = 45 : 6 = 7.5

rata rata = 7.5

semoga membantu....^_^

maaf kalau salah ya...
Good Luck....