No you dont
This male will be added to the female stats not the male stats
The male killers % is understated
The female killer % is overstated
So the addition of even one additional killer to the female stats and removal of a male from the male stats move the % of female killers and adds a massive skew in the female data
Y1 : 1 killer female
Y2 : 1 killer female + 1 male killer called female
Y1: 1 killer
Y2: 2 killers
Calculate the % change from Y1 to Y2 and should the public be worried if they are told :
The year on year data of mass shooting by women has risen by __? %