# Variance calculator

The variance is a measure of the spread of a dataset. It is calculated as the average of the squared differences from the mean. The formula for variance is:

**Var(X) = sum((Xi – X_mean)^2) / n**

Where:

- Var(X) is the variance of the dataset X
- Xi is the ith element in X
- X_mean is the mean of the dataset X
- n is the number of elements in X

**To calculate the variance, you simply need to:**

- Calculate the mean of the dataset X.
- For each element in the dataset X, subtract the mean and square the result.
- Sum the squared differences from step 2.
- Divide the sum by the number of elements in the dataset X to get the variance.