pellmell
They call it an "IQ Average". Well, it really is much worse than that.
They never, ever test the mentally confirmed or infirmed.
But the GEN X, Millennial etc, are often proud to quote their high score, real or not.
So, if not everyone is tested, the actual IQ average is much lower than we think.
Looking at it another way, 4 cars pull up to a 4-way stop, half the time or better, two or three people are probably below the actual IQ average.
Hell - Many times that is me. hahahaha