# Variance

{% hint style="success" %}
The average of the squared differences from the Mean. 
{% endhint %}

It shows numerically how far the data points are from the mean. Neither the mean nor the median can describe this. \
\
**Variance,** $$\sigma^{2}=\frac{1}{n}\sum\_{i=1}^n(x\_{i}-\mu)^2$$


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