Standard Deviation Calculator
Calculate mean, variance, standard deviation, and other statistics from a data set. Supports both population and sample calculations.
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What this calculator does
Standard Deviation Calculator helps you quickly estimate calculate mean, variance, standard deviation, and other statistics from a data set. supports both population and sample calculations. with clean output and clear next steps.
How the calculation works
Enter Data Values (comma-separated), Type and this calculator uses standard formulas to determine Mean (Average) and Standard Deviation. The output is displayed immediately in a user-friendly format.
Example calculation
For example, enter realistic values into the Standard Deviation Calculator to see how the calculator produces Mean (Average) and Standard Deviation that you can use for planning and comparison.
Disclaimer
The calculations provided by this website are for informational purposes only and should not be considered financial, legal, tax, or professional advice.
Frequently Asked Questions
When do I use sample vs. population standard deviation?
Use population (σ) when you have complete data. Use sample (s) when analyzing a subset. Sample uses n-1 (Bessel's correction) instead of n.