Not to change the subject, but if so, that's a sad commentary on the current state of the education industry. I first heard the term--along with mean, median, mode, and standard deviation, in a statistics unit in junior high math class.Indeed. But I suspect that reference may be too buried in statistics-jargon for most people. They don't know that an oultier is (generally) 2nd or further standard deviations from norm, or out in the thin spots of the tails of the bell curve.
And I'm not really that old.