Statistics Calculator
Calculate mean, median, mode, range, variance, and standard deviation.
How this calculator works
How to use this calculator
Enter a list of numbers separated by commas, spaces, semicolons, or line breaks. The calculator returns common statistics including mean, median, mode, range, variance, and standard deviation.
Formula used
Mean = sum ÷ count. Median is the middle value after sorting. Range = max − min. Population variance is the average squared distance from the mean. Standard deviation is the square root of variance.
Example calculation
For 2, 4, 4, 4, 5, 5, 7, 9, the mean is 5, median is 4.5, mode is 4, and population standard deviation is 2.
What the result means
These values summarize the center and spread of a data set.
Frequently asked questions
Is this sample or population standard deviation?
This calculator shows population variance and population standard deviation.
Can I enter decimals?
Yes. Decimal and negative values are supported.
What is mode?
The mode is the value that appears most often.