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Remove note about stability for varsamp
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Calculate the sample variance of a data set.
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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 [`varSampStable`](../reference/varsampstable.md) function. It works slower but provides a lower computational error.
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:::
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**Syntax**
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```sql
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