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## Standard deviation - Wikipedia

en.wikipedia.org/wiki/Standard_deviation

In statistics, the standard deviation is a measure that is used to quantify the amount of variation ..... For unbiased estimation of standard deviation, there is no formula that works across all dis...

## Standard Deviation Formulas - Math is Fun

www.mathsisfun.com/data/standard-deviation-formulas.html

The symbol for Standard Deviation is σ (the Greek letter sigma). This is the formula for Standard Deviation: square root of [ (1/N) times Sigma i=1 to N. Say what?

## Formulae for the standard deviation

libweb.surrey.ac.uk/library/skills/Number Skills Leicester/page_19.htm

Whilst it is not necessary to learn the formula for calculating the standard deviation, there may be times when you wish to include it in a report or dissertation.

## Calculate Standard Deviation - Formula and Calculation

explorable.com/calculate-standard-deviation

As an experimenter, it is important to be able to calculate standard deviation, because it is a very important parameter that defines the way data is centered about ...

## Simple Example of Calculating Standard Deviation

standard-deviation.appspot.com/

A simple, step by step example of how to calculate standard deviation.

## Standard Deviation | How and when to use the Sample and ...

In statistics, we are usually presented with having to calculate sample standard deviations, and so this is what this article will focus on, although the formula for a  ...

## Standard Deviation - David Lane

davidmlane.com/hyperstat/A16252.html

The variance and the closely-related standard deviation are measures of ... The standard deviation formula is very simple: it is the square root of the variance.