Re: The 80% of us who think they are "better than average" drivers
//This always infuriates me. It is quite possible for 80% of a sample to be above the average.//
Not if the average in question is a median - and that's a better average to use for this purpose.
Looking at the sample data-set you gave, should the four '10' drivers say "I'm about the same as everyone else - except that one guy who doesn't have a licence, never uses indicators, uses the mirror only to shave, and tends to stop by running into something - therefore I'm definitely better than average", or "I'm about the same as most of the other drivers, therefore I'm about average".