Alternatively, use an ogive graph – also known as a cumulative frequency graph – which plots cumulative relative frequencies on the vertical axis and values or categories along the horizontal axis.

Cumulative Frequency (Event N) = Absolute Frequency (Event 1) + … + Absolute Frequency (Event N-1) + Absolute Frequency (Event N) Step 6: Visualizing Your Results To better understand your dataset, ...

cumulative frequency graph is straightforward once the median and quartiles have been found. The minimum and maximum values of the box plot are where the cumulative frequency begins and ends.