A cumulative frequency diagram is drawn by plotting the upper class boundary with the cumulative frequency. The upper class boundaries for this table are 35, 40, 45, 50 and 55.

Contingency Table: a table/matrix that displays the frequencies of the observations with same values for two variables. Also called a two-way table. Cumulative Frequency Distribution : for each value, ...

A cumulative frequency diagram reproduces this table as a graph. The table below shows the lengths of 40 babies at birth. To calculate the cumulative frequencies, add the frequencies together.