Is Variance the Mean?

The variance is the average of the squared differences from the mean. To figure out the variance, first calculate the difference between each point and the mean; then, square and average the results.

Is variance based on mean?

The variance is mean squared difference between each data point and the centre of the distribution measured by the mean.

What exactly is variance?

In statistics, variance measures variability from the average or mean. It is calculated by taking the differences between each number in the data set and the mean, then squaring the differences to make them positive, and finally dividing the sum of the squares by the number of values in the data set.