ClickHouse/docs/zh/sql-reference/aggregate-functions/reference/stddevpop.md
2021-03-25 17:09:19 +08:00

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stddevPop

The result is equal to the square root of varPop.

!!! note "Note" This function uses a numerically unstable algorithm. If you need numerical stability in calculations, use the stddevPopStable function. It works slower but provides a lower computational error.