The number of members in 20 families are given as follows:
4,6,5,5,4,6,3,3,5,5,3,5,4,4,6,7,3,5,5,7
How many families have less than 5 members?
4, 6, 5, 5, 4, 6, 3, 3, 5, 5, 3, 5, 4, 4, 6, 7, 3, 5, 5, 7
Here, we see the number of families with 3 members is 4 and with 4 members is also 4.
So, the number of families with less than 5 members is 8.