# Std-deviation

Calculate standard deviation for file:

63,65,68,69,69,72,75,76,77,79,79,80,82,83,84,88,90

Correct result:

s =  7.6561
s1 =  7.8917

#### Solution:

${s}_{1}=\sqrt{{a}_{17}\mathrm{/}\left(n-1\right)}=\sqrt{996.4706\mathrm{/}\left(17-1\right)}=7.8917$

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Showing 1 comment:
Dr Math

https://www.hackmath.net/en/calculator/standard-deviation?input=63%2C65%2C68%2C69%2C69%2C72%2C75%2C76%2C77%2C79%2C79%2C80%2C82%2C83%2C84%2C88%2C90

Statistical file:
{63, 65, 68, 69, 69, 72, 75, 76, 77, 79, 79, 80, 82, 83, 84, 88, 90}

Standard deviation σ=7.63165870128
Corrected sample standard deviation s=7.86653373101

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