Standard Deviation Calculator
Calculate standard deviation, variance, mean, median, and mode for any dataset.
Frequently Asked Questions
What is standard deviation?
Standard deviation measures how spread out numbers are from their average. A low standard deviation means values are close to the mean, while a high standard deviation means they are more spread out.
What is variance?
Variance is the square of the standard deviation. It measures the average squared distance from the mean and is used in many statistical calculations.
How do I format my numbers?
Enter numbers separated by commas, spaces, or new lines. For example: "1, 2, 3, 4, 5" or "1 2 3 4 5".