# Variance calculator

One of the simplest variance calculators works for whole population data and sampled data with just one click.

## What does this Variance calculator do?

Before understanding the variance calculator, first of all, let's understand what does variance mean? Variance is one of the most famous topics in the field of probability. In probability, variance is explained as the expectation of a squared deviation of a random variable from its population mean or a simple mean.

To put this in simple words, how far a set of numbers is spread out from their average value, and to understand this easily let's consider this example. If the average value of a set of numbers is 10 and the set of numbers varies from 50-60 then the variance calculator will return the final answer as high variance and in case the value is closer to the value 10 then the variance is going to be lesser.

## How to use this variance calculator?

To use this variance calculator, you just need to interpret the data values inside the text area. You need to separate these values by a comma. For example, if you want to insert 3,6,9,12 data numbers for variance calculation, then you need to insert the by like that only. Once you insert the data, you need to select an option between whole population data and simple data and tap on the answer button. As soon as you tap on the answer button, you will get the answer in Standard deviation, Variance, and mean as the final answer.

The explanation of all these terms are written below,

• Whole population data
• This variance is the variance of the population in a particular area

• Standard population
• The standard population is denoted by σ and it is used to measure the entire population.

• Mean
• To calculate the mean of a set of numbers, you just need to add all the numbers and divide them by the total numbers.

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