Question

In a group of 15 children, 5 said they are an only child, 3 said they have 1 sibling only, 4 said they have exactly 2 siblings, and 3 said they have exactly 3 siblings.

What is the average number of siblings for this group?

Enter your answer as a decimal, rounded to the nearest tenth, in the blank.

Answer 1

1.3

Explanation:

Answer 2

1.3

Explanation:

To find the average number of siblings for the group, we need to calculate the total number of siblings and divide by the total number of children.

Out of the 15 children:

5 are only children, so they have 0 siblings each.

3 have 1 sibling each, so there are 3 * 1 = 3 siblings in total.

4 have 2 siblings each, so there are 4 * 2 = 8 siblings in total.

3 have 3 siblings each, so there are 3 * 3 = 9 siblings in total.

The total number of siblings is 0 + 3 + 8 + 9 = 20.

The average number of siblings for the group is 20/15 = 1.3 (rounded to the nearest tenth).

Therefore, the average number of siblings for this group is 1.3.