% This is generated by ESQL's AbstractFunctionTestCase. Do not edit it. See ../README.md for how to regenerate it.

**Example**

```esql
TS k8s
| STATS avg_var_cost=AVG(VARIANCE_OVER_TIME(network.cost)) BY cluster, time_bucket = TBUCKET(1minute)
```

| cluster:keyword | time_bucket:datetime | avg_var_cost:double |
| --- | --- | --- |
| staging | 2024-05-10T00:03:00.000Z | 20.478516 |
| qa | 2024-05-10T00:21:00.000Z | 16.0 |
| qa | 2024-05-10T00:18:00.000Z | 11.192274 |
| staging | 2024-05-10T00:09:00.000Z | 10.446904 |