In reply to: I reckon it's exactly half. * posted by IrishJosh24
The mean is the mode is the median.
It is normally distributed, and in a population as large as the US, we should expect 1/2 the population above and half below.
It's not like wealth where the average is further to the right than the median due to extreme wealth.
I actually know next to nothing about IQ, so I had no idea.