"David Eduardo" wrote in message
...
In each market area, all listening to any radio station is recorded by
listeners as is the instruction in the Arbitron diary. Commercial or
non-commercial, local or not, internet or off air, satellite or
terrestrial. All is recorded and processed. If there is any significant
listening to out of market stations it is recorded.

WRONG. Arbitron does NOT log "ALL LISTENING". They log a small percentage
of listening, and profess to know what all the rest are doing based upon
that. Statistics are crap. They are not, and really can never be, accurate.
They are mathematical sleight of hand. Smoke and mirrors. I doubt there is
any real scientific foundation for them at all, since it's highly unlikely
that anyone did a small sample, then went to six million people and asked
each of them the same questions to verify the numbers.