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Standard Deviation Calculator

Spread of a set of numbers. Free online calculator with instant results — no login needed.

Standard

What is the Standard Deviation Calculator?

Spread of a set of numbers. Free online calculator with instant results — no login needed.

Enter your values above and the result updates instantly. Enter five numbers to see the result.

Formula

Standard deviation = √(variance)

Example

Standard

FAQs

Population or sample?

This uses the population formula.

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