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16 lines
515 B
Markdown
16 lines
515 B
Markdown
---
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slug: /en/sql-reference/aggregate-functions/reference/stddevpop
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sidebar_position: 30
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---
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# stddevPop
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The result is equal to the square root of [varPop](../../../sql-reference/aggregate-functions/reference/varpop.md).
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Alias:
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- `STD`
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- `STDDEV_POP`
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:::note
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This function uses a numerically unstable algorithm. If you need [numerical stability](https://en.wikipedia.org/wiki/Numerical_stability) in calculations, use the `stddevPopStable` function. It works slower but provides a lower computational error.
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::: |