> For the complete documentation index, see [llms.txt](https://ai.nuhil.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai.nuhil.net/statistics/skewness.md).

# Skewness

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Skewness measures the asymmetry of a data sample. 
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Data can be **skewed**, meaning it tends to have a long tail on one side or the other.

![Negative Skew, Normal Distribution No Skew, Positive Skew (Left to Right)](/files/-LzIjClMakZzz-KRbqed)

#### References

{% embed url="<https://www.mathsisfun.com/data/skewness.html>" %}