# Cumulative Frequency Calculator

'Cuemath's Cumulative Frequency Calculator' is an online tool that helps to calculate the cumulative frequency for a given data set.

## What is a Cumulative Frequency Calculator?

Cuemath's online Cumulative Frequency calculator helps you to calculate the cumulative frequency in a few seconds.

NOTE: Please enter the values inside the flower brackets and seperated by commas.

## How to Use Cumulative Frequency Calculator?

Please follow the steps below to find the cumulative frequency:

**Step 1:**Enter the frequency data set separated by a comma in the given input box.**Step 2:**Click on the**"Calculate"**button to find the cumulative frequency.**Step 3:**Click on the**"Reset"**button to clear the fields and find the cumulative frequency for different data sets.

## How to Find Cumulative Frequency?

Cumulative frequency(cf) is defined as the frequency of the first-class interval is added to the frequency of the second class, and this sum is added to the third class. Cumulative frequency is the total of a frequency and all frequencies in a frequency distribution until a certain defined class interval.

**Solved Example:**

Find the cumulative frequency of the data set

Month Number of toy cars sold (Frequency)

January 20

February 30

March 15

April 18

**Solution:**

Given: Data set = {20, 30, 15, 18}

Month Number of toy cars sold (Frequency) Total number of toy cars sold (Cumulative Frequency)

January 20 20

February 30 20 + 30 = 50

March 15 50 + 15 = 65

April 18 65 + 18 = 83

Therefore, cumulative frequency is {20, 50, 65, 83}

Similarly, you can try the calculator to find the cumulative frequency for the given data set:

a) {14, 15, 21, 7, 8, 16, 4, 5} b) {18, 25, 30, 16, 19, 22, 17}

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