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en.wikipedia.org/wiki/Standard_deviation

In statistics, the

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But here we explain the

www.khanacademy.org/math/probability/data-distributions-a1/summarizing-spread-distributions/a/calculating-standard-deviation-step-by-step

Read and learn for free about the following article:

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In statistics, we are usually presented with having to calculate sample

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Standard Deviation (SD) is the measure of spread of the numbers in a set of data
from its mean value. ... Population SD : Population

www.bbc.co.uk/bitesize/standard/maths_ii/statistics/standard_deviation/revision/2/

The first of the two formulae is often referred to as the defining

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Mar 23, 2010 ... Standard deviation quantifies how diverse the values of your data set are, ...
Calculating a Sample Standard Deviation (for ungrouped data) ...

davidmlane.com/hyperstat/A16252.html

The variance and the closely-related standard deviation are measures of ... The

www.calculator.net/standard-deviation-calculator.html

Free online tool to calculate the

researchbasics.education.uconn.edu/calculatingmeanstandarddev/

More Info

libweb.surrey.ac.uk

Whilst it is not necessary to learn the

explorable.com

As an experimenter, it is important to be able to calculate

standard-deviation.appspot.com

A simple, step by step example of how to calculate