Cumulative Frequency Tables
What Is a Cumulative Frequency Table?
A cumulative frequency table is a frequency table with a running total of the frequencies.
A frequency table shows how often  how frequently  each number appears in a list of numbers.
Imagine you had a set of numbers:
A cumulative frequency table is a way to present this data:
Understanding the Cumulative Frequency Table
A cumulative frequency is a frequency table with a Cumulative frequency column.
Let's look again at our list of numbers (rearranged in order and each number counted):

The Number column of the frequency table contains each number in this list.

The Frequency column of the frequency table contains how often each number appears in this list.
This gives us a frequency table:

The Cumulative frequency column keeps a running total on the frequency.

The cumulative frequency in the first row is equal to the frequency:

The cumulative frequency in the second row is found by adding the frequency in this row to all the frequencies above:
Note: It is also found by adding the frequency in this row to the cumulative frequency above.

The cumulative frequency in the third row is found by adding the frequency in this row to all the frequencies above:
Note: It is also found by adding the frequency in this row to the cumulative frequency above.

The cumulative frequency table is complete when all the cumulative frequencies have been entered:

Other Types of Frequency Table

A frequency table shows how often (how frequently) each number appears in a list of numbers.

A grouped frequency table groups numbers together. It shows you how often numbers within each group appear in a list of numbers.

A cumulative grouped frequency table is a grouped frequency table that has another column which keeps a running total of the frequencies.