Graphs, charts and tables are used to help organise and order data. We can use statistical processes to analyse raw or grouped data in order to measure spread or calculate averages.
Part ofMathsStatistics
The cumulative frequency is obtained by adding up the frequencies as you go along, to give a 'running total'.
The table below shows the lengths (in cm) of 32 cucumbers.
To calculate the cumulative frequencies, we simply add the frequencies in turn as we go down the values in the table.
