This isn't quite comparing the right groups. The comparison is of the people within Africa and the people outside Africa: "Africans are more genetically divers

This isn't quite comparing the right groups. The comparison is of the people within Africa and the people outside Africa: "Africans are more genetically diverse than the inhabitants of the rest of the world combined" - https://www.washingtonpost.com/wp-dyn/content/article/2009/04/30/AR2009043002485.html https://www.washingtonpost.com/wp-dyn/content/article/2009/0..., which seems to be referring to this: https://faculty.washington.edu/wjs18/Pop_Structure/TishkoffAfrican.pdf https://faculty.washington.edu/wjs18/Pop_Structure/TishkoffA... Some more info here: https://en.wikipedia.org/wiki/Human_genetic_variation https://en.wikipedia.org/wiki/Human_genetic_variation