Average of (last period only)

Aggregation Average of (last period only) ([Measure])

Returns the average of all values in the expression only for the last known date.
For instance, you have a data source containing a monthly snapshot of all your staff. You want to know the average age of your staff. You need to average the [Age] attribute only for the last know date. This is what 'Last Average' does.
(Null values are ignored)

Type LinPack built-in Aggregation