"This is because while Google might be selective in their hiring practices, they aren’t +4 SD selective. This is because, given a normal distribution, we only e

"This is because while Google might be selective in their hiring practices, they aren’t +4 SD selective. This is because, given a normal distribution, we only expect 0.000032% of observations to have a score ≥ 4 SDs above the mean." Maybe there is something I don't understand but 4 sigma is .006334% so > 4SD would be 0.003167%. "This percentage equates to just 273 New Yorkers, 30 people from San Francisco, or just 11 thousand people in the entire United States, the 3rd most populous country on earth." 0.000032% of 320 million would be 102 people.