15 Cumulative Frequency Diagram. So cumulative frequency means all of the frequencies for the different classes, totalled. In the world of statics, graphs, in particular, are very important, as they help us make sense of the data and understand it.

You can draw cumulative frequency diagrams for both discrete and continuous data sets. A cumulative frequency diagram is a good way to represent data to find the median, which is the middle value. • diagrams are not accurately drawn, unless otherwise indicated.

The cumulative frequency is calculated by adding each frequency from a frequency distribution table to the sum of its predecessors.

15 Cumulative Frequency Diagram. Cumulative frequency is defined as the sum of all the previous frequencies up to the current point. Cumulative frequency is kind oflike a running total. So cumulative frequency means all of the frequencies for the different classes, totalled. As we know, a picture speaks a thousand words.