> 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)](https://2552912007-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LzGBVuquaFNrwdmJna0%2F-LzIilLrQu2PJDf7LCv-%2F-LzIjClMakZzz-KRbqed%2FScreen%20Shot%202020-01-23%20at%2011.49.01%20AM.png?alt=media\&token=f7384a69-4b33-416b-b431-33aa8180bde1)

#### References

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