[_delirium]

I don't think that particular statistic by itself explains much of it; YC has funded over 200 founders, so if indeed the relevant population were 13% Black, that would imply an expectation of around 25 Black founders. I don't think anyone's asking why there aren't 50% Black founders, by why there aren't closer to 13%. (There may well be good explanations, but they have to be something other than the 13% total population number.)

[petercooper]

Yeah, demographics and statistics are tough and mostly useless in this situation. For example, the DOE found that roughly 40% of people have merely a basic or "below basic" level of literacy, yet I doubt that's true of the YC alumni..

[ry0ohki]

It doesn't really matter what the overall percentage in the population as a whole is, it's more of a question of their representative percentage in creating a technology startup, or as others have mentioned, it matters how many apply to YC.