Intelligence is often modelled as a bell curve, where median and average (arithmetic mean) are equal.

Preach

W̵̛̬̜͇͕̊͛̑̓̎Ȩ̸̜̱̰̭̠̞͗̆͑́̈́͑̕I̴̮͚͎̲͇͈̯͐̋̕Ģ̷̭̆̑̿̾̀̅̓ͅḨ̴̧̹̩̮̼̟̆̃͆̈́̃T̴̡͔͙̰̣̈́̃́̌̄͗ͅE̴̠̻͇̐͑͂D̵̺̜̠̼̋̊́̈̀̕ ̴̨͎̩̙̤̦͂͐̋̕͠ͅM̷̞̣̺̼̕͜E̴̖̳̯̬̣̍͐̋͐A̶͈̿͌͊̄͋Ņ̷̝̭́͑̂̎̂̕͜