120 competitors enter an elimination race for charity. Runners set off from the same start running as many laps of the course as possible. Their total distance is tracked and the competitor who runs the furthest over a 6-hour period is the winner. The distances runners achieved are recorded in the table below:
On the grid below, draw a cumulative frequency graph for the information in the table.
Use your graph to find an estimate for the median and interquartile range.
