7)
Moda=9
Mediana=9
media=6×1+7×3+9×5/9=6+21+45/9=972/9=108
6=I
7=III
9=IIIII
8)
moda=2
mediana=2
media=1×3+2×6+3×3/12=3+12+9/12=24/12=2
1=III
2=IIIIII
3=III
9)
moda=7,6
mediana=6
media=5×3+6×5+7×2/10=15+30+14/10=59/10=5.9
5 = III
6= IIIII
7=II
