Quick Exclusion/Include Only on Visuals
Tableau includes the ability to select a range of data in your visual and right click and select "exclude" or "include only". It makes it super fast to remove outliers and get to the story you want to tell more easily. This is essentially on-the-fly filtering.
Daniel LEMEE commented
Great idea... Very helpfull when there is anormal values
Rob Jouvenaar commented
As a average from a average is not done, there should be a method to remove outliers.