I'm not sure there are any official numbers on this, but as a serious female sports fan, it certainly seems to me that we're a pretty distinct gender minority in the overall world of fandom.
That's not to say women in sports are persecuted or anything. Just to be clear—on the scale of female persecution, you've got Joan of Arc on one side and female sports fans waaaaaaaay on the other.
My only point was that because sports is such a male dominated world, the average female fan experience is a little different from that of the average male. Most issues are comically minor, but there are a few things I know we could all live without.
Frustrations aside, for many of us, sports are a huge and enjoyable part of our lives—irreplaceable even. Although, there are at least 15 things we kinda hate about it.