Inter-quartile range, cumulative frequency, box and whisker plots - Higher
A box and whisker plot is used to display information about the range, the median and the quartiles. It is usually drawn alongside a number line, as shown:
The oldest person in Mathsminster is 90. The youngest person is 15.
The median age of the residents is 44, the lower quartile is 25, and the upper quartile is 67.
Represent this information with a box-and-whisker plot.
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