Digital Feng Shui

Square Versus Absolute Value in Statistics

So I'm in Geo an the professor asks us a question about statisics... The class has no idea what's going on, I have no idea what's going on... Eventually, the discussion comes to whose model has a better fit to the actual statistics. Absolute value of the difference versus the square of the difference. I don't know yet, but this guy seems to know. Maybe I should ask Dr. Spencer...