According to statistical information concerning body build among the three major racial groupings (the Mongoloid or yellow; the Caucasian or white; and the Negroid or black) Caucasian males are, on average, 1 meter 77 centimeters tall (5 feet 10 inches) at maturity while Caucasian females have an average height of 1 meter 65 centimeters (5 feet 5 inches) at maturity.
根據世界各國成年國民身體發展的統計資料來看，白人在身高上最佔優勢，男性平均約高一百七十七公分、女性則為一百六十五公分；黑人平均比白人矮二、三公分；黃種人和白種人的差距就有十公分左右了。