Group By Average

[JohnBarnes]

Hi,

I am attempting to acquire the average number of days an account is open for by business group.. There are multiple entities (rows) within a given business group. I already have the total number of days an account is open for, for each of the entities on the report. However I need to get the average number of days by each business group an account is typically open for. Any ideas on how I can do this in Looker ? I already created the total number of days an account is open for measure in the lookml.