Men versus Women The average 20 - to 29 -year-old man is 69.6 inches tall, with a standard deviation of 2.7 inches, while the average 20 - to 29 -year-old woman is 64.1 inches tall, with a standard deviation of 2.6 inches. Who is relatively taller, a 75 -inch man or a 70 -inch woman? (Source: Vital and Health Statistics, Advance Data, Number $347,$ October 27,2004 )