3 The heights, in cm, of 200 adults in Barimba are summarised in the following table.
| Height \(( h \mathrm {~cm} )\) | \(130 \leqslant h < 150\) | \(150 \leqslant h < 160\) | \(160 \leqslant h < 170\) | \(170 \leqslant h < 175\) | \(175 \leqslant h < 195\) |
| Frequency | 16 | 32 | 76 | 64 | 12 |
- Draw a histogram to represent this information.
\includegraphics[max width=\textwidth, alt={}, center]{a909cef1-8a22-4cef-b0b7-c48316304c0c-04_1397_1495_762_287} - The interquartile range is \(R \mathrm {~cm}\). Show that \(R\) is not greater than 15 .