The issue is that the data can't be conclusive unless you have an issue where you took two groups of people, gave them the same economic starting point, gave them the same systemic disadvantage, same opportunities and then could make a determination as to whether or not it has anything to do with culture.

Or you could easily look into the fact that economically there is a long history of repressing people of color and that systemic collection of repressions them still exist leading to the exact outcome expected, but still blame those people for "not picking themselves up by their bootstraps". It's as though you haven't seen Trading Places.