We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Anyone who has worked in an institution for the mentally retarded/mentally disabled/PC term de jour can tell you that there are many more males than females housed in such institutions. Males: greater variation. Females: greater stability.
Counting the number of men vs women in the nut house is not the same as knowing the percentage of men vs women who are certifiably crazy. Thanks to biology and social mores women have more options then men to compensate for their handicaps. They can marry or cohabitate with someone who will make allowances for their mental deficiency. In theory men could as well but since the societal norm is for the man to support the woman the man needs to be somewhat "normal" in order to be able to do that.
What is really interesting about the graph is not shown but implied. That is for reasons we don't understand the number of male geniuses is much greater then the number of female geniuses. Why exactly? Is it testosterone? Is it that IQ tests are inadequate or even discriminatory? Is it social as in we expect men to be fixers and inventors and therefore they develop skills and a knowledge base more then woman do? Is it that a fraternal association leans more towards learning then a sorority or sisterhood does? I know that when I was a teen my friends and I were taking cars apart and building drag cars to race while the teen girls were spending their productive hours with makeup and clothes. Is an IQ test an accurate measure of intelligence or is it merely a test of what you have learned based on a assumption about what you've been taught?