I need some numbers on league..

Hey all. I'm doing a presentation on LoL for class (bc y not) and because numbers and graphs are a requirement, I've started some polls and I need your help to gather results. They won't take more than a minute really, so it's really appreciated if you'd take a look. If you've got more than a minute to spare, a reason/comment behind your choices (for any of the poll questions) is also appreciated. Please and Thank you!

What is your favorite role? Favorite featured game mode? Favorite game mode/map? Do you play ranked?