Quote:
Originally Posted by Prometheus
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This doesn't change what I am saying that the Argos are irrelevant to my age group in the City.
Also a sample size of 600 for a city of 2.5 million is extremely small and could be easily be bias. For example did they get peoples opinion by phone, in person or through the internet.
It is well known that older people are more likely to have the patience to sit through a survey call than younger people. The in person surveys are much more reliable.
"• Random digit dialling is no longer representative. Phone surveys with automated random digit dialling are no longer representative of the US population, as landline telephones now skew to older respondents. From the 1950s to the 1990s randomly composing a phone number and calling it provided a true probability sample of the US population. But, thanks again to those cord cutters, that Golden Age has ended."
http://www.research-live.com/features/do-telephone-surveys-have-a-future?/4000692.article
If I was a surveyor and I knew of this bias and I wanted a older demographic I could easily skew the results to an older populace.