Below you are given the ages of a sample of 10 college stude

Below you are given the ages of a sample of 10 college students who enrolled in statistics. 20 18 20 22 18 20 22 17 19 24 Calculate the interquartile range.

Solution

Reordering the data,

17
18
18
19
20

20
20
22
22
24

Here,

Q1 = median of lower half = 18
Q3 = median of higher half = 22

Thus,

IQR = Q3 - Q1 = 22-18 = 4 [ANSWER]