2 ms·
> > If all of the IQs in a county went down we might investigate that. There's one. > The average is always by definition exactly 100, neither higher nor lower
by aidenn0 3y ago
> > If all of the IQs in a county went down we might investigate that. There's one.
> The average is always by definition exactly 100, neither higher nor lower.
The average for the population that the test is normalized is exactly 100. GP was suggesting that if the averaged dropped in a single locality (specifically county, but I'm generalizing), which is completely possible.