« on: January 14, 2008, 06:10:13 PM »
Even assuming your school shoehorns things into a symmetrical distribution around 3.0 (which they may not, like rhesusman is saying), you still need the spread. Think of it like the LSAT. If I told you the median of a school is 160 and you got a 163, you wouldn't know what your chances are. But if I told you that the 25th-75th quartile spread is 159-161, you have a better idea of your chances. If I told you the spread was 155-165, you would also have a better, but different, idea of your chances.