Variance Calculator

To Calculate Variance:

Enter all the numbers separated by comma :

Mean (Average) :
Variance :


Variance Calculator is a free online tool that displays the variance for the given set of data. BYJU’S online variance calculator tool makes the calculation faster, and it displays the variance in a fraction of seconds.

How to Use the Variance Calculator?

The procedure to use the variance calculator is as follows:

Step 1: Enter the numbers separated by a comma in the respective input field

Step 2: Now click the button “Calculate Variance” to get the result

Step 3: Finally, the variance for the given set of data will be displayed in the output field

What is Meant by the Variance?

In Mathematics, the variance is a measure which can be calculated from the set of data. It can be calculated by taking the average of the squared difference from the mean. To find out the variance, follow the below procedure:

Step 1: Find out the mean for the given set of data

Step 2: For each number, subtract the mean and then square the obtained result

Step 3: Finally, work out the average of those squared differences.

For example, 5, 6, 7 are the set of data

To find variance,

Step 1: mean = (5 + 6 + 7)/3 = 18/3 = 6

Step 2: (5 – 6)2 + (6 – 6)2 + (7 – 6)2 = (-1)2 + 0 + (1)2 

Step 3: (1 + 0 + 1)/3 = ⅔ = 0.667


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