And yet I am surrounded by statistical concepts every day. Sometime I am defined by them and sometimes statistics are used as a weapon.  Now it is not that I am totally ignorant. I make observations on human behavior, expected outcomes and playing the odds of will I make it across the street alive with a solid green light at rush hour. But I don't have the mathematical language to be able to express it.  I don't have access to those folks who have a different idea of what a standard deviant is than I do.

Quick, guess which number is higher:  the number of people who sprain their ankle each year or the number of women who experience a postpartum mood disorder?  Actually, it's about equal.  Surprised?