Hey, hey. Where does
this fit? Puzzle? Strategy? RPG?
... seriously though, OP. Forum poll is not where you go for hard data on game sells. I mean, the statistics methodology behind doing this is just
horrific. Too small, not even remotely representative (especially this forum!), absolutely no control over the results or ways to
test control for spoof data. Not randomized at all, crazy person! You need to go get marketing numbers on what actually sold. E: Caveat: I have no idea where the hell to actually find that data. Ask your teacher or the nearest marketing major.
Breaking down by digital and physical would be a good idea. Adding a portion on second-hand sales (Resale, etc.) would be ideal.
E: The other problem with forum polls, is you get responses like this one.
E2: Actually, this could be for a psych/sociology essay instead of actually having to do anything with the actual topic. Checking the responses instead of the actual poll data. S'been known to happen.