Data sets can be compared by looking at their similarities and differences. This can be done by first calculating an average and a measure of spread for reach.
Part ofApplications of MathsStatistics
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.
