ABSTRACT
A sk your friends whether they have ever been surveyed by the Nielsen com-pany about what television shows they watch. Every week the ratings come out with a listing of the most popular shows. Yet, so few people seem to know anyone who was ever asked by a pollster what they watched on TV that week. It is probably not surprising, given that only a few thousand people or so were actually surveyed. How can such a small sample of people accurately represent the entire nation?
