I am using 1.8. When I view grades any student in a course who has not attempted a quiz shows up with an "F". Is there a way to exclude students who have not attempted any graded activities?
I'm not sure if this works in 1.8, but try going to the Gradebook, look at the topmost category for the course. In the settings there look for something that says "aggregate only non-empty grades" or some other language that indicated only graded items will be averaged...by looking at the main category, you will impact all sub-categories in the course. This works in 1.9 but I have not worked in 1.8. Good luck
This definitely won't work in 1.8.
Is there a way to limit the grades to only show students who have made quiz attempts?