> For the complete documentation index, see [llms.txt](https://docs.cascade.io/cascade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cascade.io/cascade/functions-and-expressions/functions/aggregate/var.md).

# VAR

VAR(`series 1`)

Returns the population variance of a numerical series.

### Arguments

| Input      | Description      |
| ---------- | ---------------- |
| `series 1` | Numerical series |

### Outputs

Outputs a population variance.

### Example

{% embed url="<https://datawrapper.dwcdn.net/FmT55/1>" %}