σ²MATH
Variance Calculator
Calculate population or sample variance from a list of numbers.
Enter your values
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Formula
Variance is the average squared distance from the mean; sample variance divides by N − 1.
Variance is the average squared distance from the mean; sample variance divides by N − 1.
How it works
1
Enter the data values.
2
Choose population or sample.
3
Review mean, variance and standard deviation.
Important notes
The population and sample conventions use different denominators.