Two samples have the summaries below.
minQ1medianQ3maxA412182547B215212938\begin{array}{c|ccccc}&\min&Q_1&\text{median}&Q_3&\max\\\hline A&4&12&18&25&47\\B&2&15&21&29&38\end{array}ABmin42Q11215median1821Q32529max4738
Compare the location and spread of the samples.
Explain why the range and IQR give different messages about spread.
105 exam-style questions on WJEC A Level Maths 2.2 Data presentation and interpretation, covering 2.2.1 Data presentation and interpretation, 2.2.2 Data presentation and interpretation, 2.2.3 Data presentation and interpretation, 2.2.4 Data presentation and interpretation, 2.2.5 Data presentation and interpretation, 2.2.6 Data presentation and interpretation, 2.2.7 Data presentation and interpretation, 2.2.8 Data presentation and interpretation, and 2.2 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.