Question

The number of students in 10 kindergarten classes is shown below.

20, 18, 21, 18, 22, 24, 18, 23, 23, 24

What number of students describes the first quartile?
What number of students describes the third quartile?
What number of students describes the interquartile range?

Answer 1

1. 18

2. 23

3. 5

Explanation:

The first quartile is 18, the third quartile is 23, and the interquartile range is 5.