Q. 3.35

Traffic Violations

Find the interquartile range of the data set in Example 3–30.

Verified Solution

Find $Q_1$ and $Q_3$. This was done in Example 3–34. Now $Q_1$ = 15 and $Q_3$ = 22. Next subtract $Q_1$ from $Q_3$.

IQR = $Q_3$$Q_1$ = 22 − 15 = 7

The interquartile range is equal to 7.