When you clear the raw checkbox, you can configure Multiple series aggregation to None, Sum or Average
and can configure Stat type as avg, min, max, median, sum and different percentiles.
You can display several different Stat types within the same query.
Stats without aggregation: each two metrics show avg, min and max
Same query with series aggregation: the two metrics are averaged into one, which shows avg, min and max
If the query returns multiple series, use Multiple series aggregation to define if and how to aggregate them.
None will show them individually on the chart. But consider for instance the case of an OpenShift pod with many replicas, and you’re tracking their memory usage.
It may be more relevant here to aggregate all of them, both sum and average are meaningful here.
The Stat type option refers to an aggregation at a different level: not between multiple metrics, but within a single metric,
all raw datapoints are aggregated within time buckets.