The last value will always be equal to the total for all observations since all frequencies will already have been added to the previous total. In the example you have a group of runners w. In simple Cumulative frequency is the running total of the frequencies.
This video covers how to make a cumulative relative frequency distribution.
To calculate the cumulative frequency for a list of data values simply enter the comma-separated values in the box below and then click the Calculate button. Find the cumulative frequency of the. 20 21 41. The frequency of a value is the number of times that value appears.