The number of children in 10 families of a locality are
2, 4, 3, 4, 2, 0, 3, 5, 1, 6.
Find the mean number of children per family.
Sum of numbers of children in families = 2 + 4 + 3 + 4 + 2 + 0 + 3 + 5 + 1 + 6 = 30
Total number of family = 10
Mean number of children per family = 
2