Males vs Females kick ratio... That's of course in favor to the females, counting raw numbers. Naturally, because there are just a lot more males in the game... By percentage tho the ratio could be a little narrower.. Yet, I know that there are a lot more females in the game as it seems. Many of them just prefer to stay below the radar, to avoid trouble and harassment from basement dwelling idiots who think just about every female is a good replacement for a jerk-off magazine..
Now for raiding.... Throughout my whole time from Vanilla WoW until today, I've always had females in the guild raids I was in. Not once was there any female that was a bottom dweller on the meters. Not a single one of them was creating any problem whatsoever. Not one of them did or at least tried to use their gender to gain any form of advantage over others.
There is only one exception, I can think of. The last guild I was with had a couple on the raiding helm. They - as a couple - took advantage of their positions as raid leaders ( I don't even know why they leaded the raids, cause both had no clue about the fights, and no clue about their classes either) and Co-GL's to shove any gear they needed to every toon they had. But I wouldn't pin that on the fact that she was a female, rather on bad character....
My current guild ranks 3rd on the realm, and the main raid group has females in it as well. One of them raid leads the Alt-runs and the "Casuals-group".
I also have a female in my family who plays WoW on hardcore level. Her main class is feral druid, and I don't know a better kitty druid than she plays.