Almost everyone thinks they are above average.

Half of any group sits above its middle, and half below.

Of 161 students in the US and Sweden, 93% of the Americans put their driving in the top half.

Only 50 of 100 can be in the top half, so at least 43 of the 93 are wrong.

Some above-average is arithmetic: one very low score pulls the average down.

A top-half claim cannot be explained that way: half of any group is in the top half.

Among University of Nebraska faculty, 94% rated themselves above average.