You play a lot on Par5s lately - as stated above, they and Par3s don't count to the average, but to the total no.
Ranked rounds in this context are stroke play rounds which aren't practice, that is "ranked" and tournament rounds. These appear in your score history.
From these, only those rounds (9 or 18 holes) on courses between Pars of 60 and 80 count towards the average.