Sorry Miguel, this didnt work.
I am trying to display the average of the top 3 iterations, for each test in my pivot table column. Not sure why you used
Anyway, I tried, your expression and this as well -
Avg(If(Aggr(Rank(Value), 4, 1), Test) <= 3, Value)
and its not working nor is this -
Avg(If (Rank(Value, 4, 1) <= 3, Value)