# Cumulative Frequency Calculator

## What is a Cumulative Frequency Calculator?

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

• 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}