**Definition of Cumulative Frequency**

- Cumulative Frequency corresponding to a particular value is the sum of all the frequencies up to and including that value.

**More about Cumulative Frequency**

- Cumulative frequency is nothing but the running total of frequencies.

**Example of Cumulative Frequency**

- The cumulative frequency table represents the volcanic eruptions between 1900 and 2000.

As we see above, the cumulative frequency for the total number of

volcaniceruptions that took place in the years during 1920-40 is

12 + 15 = 27.

**Solved Example on Cumulative Frequency**

Jack tabulated the number of cars sold in a week by an automobile company. Use cumulative frequency to find the total number of cars sold in that week.

Choices:

A. 32

B. 35

C. 16

D. 19

Correct Answer: B

Solution:

Step 1:Cumulative frequency corresponding to a particular value is the sum of all the frequencies up to and including that value.

Step 2:Use cumulative frequency table to find the total number of cars sold in a week.

Step 3:From the table, the total number of cars sold by the company in a week is 7 + 9 + 15 + 4 = 35.

**Related Terms for Cumulative Frequency**

- Frequency
- Sum
- Total
- Value