Variance Calculator
Calculate the variance of a data set.
Result
182
Variance (sample): 182
Result in all units
Step-by-step solution
What Is Variance?
Variance is the average of the squared deviations of the data from the mean. It is the square of the standard deviation and measures the spread of the data.
How is it calculated?
How Is It Calculated?
Variance = Σ(x − mean)² ÷ N
- Enter the data.
- The average of the squared deviations is taken.
The standard deviation is the square root of the variance.
Frequently Asked Questions
What is the relationship between variance and standard deviation?
The standard deviation is the square root of the variance; that is why the standard deviation is on the same scale as the unit of the data.