Using the above table, the midpoints are 32.5, 37.7, 42.5, 47.5 and 52.5. So plot ... a frequency of 0: (27.5, 0) and (57.5, 0). Then when you join the points together with a straight line ...
To find the median value, draw a line across from the middle value of the table. In the example ... Back to top Drawing a box plot from a cumulative frequency Drawing a box plot from a cumulative ...
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