Question

Find the interquartile range (IQR) of the data set. 1, 2, 3, 3, 5, 5, 6, 6, 7, 7, 8, 9, 10, 11, 15 Quartile 1 Median Quartile 3 IQR = [?] Hint: Interquartile Range = Q3 - Q1 Enter

Answer 1

Step 1

The interquartile range is given as;

$\begin{gathered} Q_3-Q_1 \\ Q_3(\text{Quartile 3) =9} \\ Q_1(\text{Quartile 1) =3} \end{gathered}$

Step 2

Find the interquartile range.

$\begin{gathered} \text{IQR = 9-3} \\ \text{IQR = 6} \end{gathered}$

Hence, the interquartile range of the data set (IQR) = 6