The professors concluded that lumping people into big groups like the " working" or "middle" class on the basis of their incomes ultimately had nothing to do with what they bought,what they watched or whom they voted for.
Last edited by Rover_KE; 26-Nov-2014 at 09:05.
Reason: Adding 'what' before 'they bought'.
The professors are saying that demographics based on income are unreliable. That is, not every person who is middle class votes for the same candidate or watches the same television show. Not every blue collar person drinks beer and eats hamburgers; not every working class person buys his clothes at Wal-Mart. So it is a wasted effort for companies to target their advertising based on a person's income level.