Standard deviation calculator with mean value & variance online.

Nov 4, 2025 · Calculates standard deviation and variance for a data set. Calculator finds standard deviation, the measure of data dispersion, and shows the work for the calculation.

May 10, 2015 · Online standard deviation calculator, calculation selected standard deviation, RMS. How to calculate the standard deviation?

You can use this Standard Deviation Calculator to calculate the standard deviation, variance, mean, and the coefficient of variance for a given set of numbers

Calculate the **Variance** by finding the average of the squared deviations (divide by N or N-1). Find the **Square Root** of the Variance to get the Standard Deviation.

Here are the step-by-step calculations to work out the Standard Deviation (see below for formulas). Enter your numbers below, the answer is calculated live.

Use the Standard Deviation Calculator to quickly find mean, variance, and standard deviation for your data set. Fast, and accurate.

This calculator computes standard deviation, variance, skewness and kurtosis of the given dataset. The calculator shows a step-by-step explanation on how to find these statistics.

This calculator computes the Standard Deviation, Mean, Variance, and other descriptive stats for a set of numbers. It also provides a table of confidence intervals.

This calculator allows you to calculate Standard Deviation using either the Population or Sample method. Additionally, it computes the arithmetic mean, variance, deviation, and other parameters.