Respuesta :

1 * 7 + 2 * 1 + 3 * 3 + 4 * 2 + 5 * 2 =

7 + 2 + 9 + 8 + 10 =

36

Now we need to divide 36 by the total frequency: 7+1+3+2+2=15

36 / 15 = 2.4