Actually, I do know the difference, pal.  I have been in real estate for 39 years, in 9 different cites, and several states. Bought it, owned it (still do), developed it, sold it, rehabbed it, traded it, managed it for cash flow, etc.  They (avg/median) are not the same at all. Average prices spikes dramatically vs median prices.  One sale can drive everything up and really skew the average price. Not so much for median prices.  Median is where you want to look at, and cost/sq foot, etc.  
You got any other brilliant remarks you want to try out?