Interquartile Range
The Interquartile Range is the difference between the third and first quartiles.
That is the interquartile range is the distance between the first quartile, \(Q_1\), and the third quartile, \(Q_3\), i.e. is calculated by:
\[\text{IQR}=\Big|Q_3-Q_1 \Big|=Q_3-Q_1\]