Somini on 17 November 2009
@kitler53,
It is mentioned in the article,
"This was a self-selecting survey, so it doesn't represent a random sample of console owners. It's likely that people whose consoles have had problems are more motivated to fill out the survey, but the results are still interesting when you compare the Xbox 360 to its competitors"
From Wikipedia,
Self-selection is a term used to indicate any situation in which individuals select themselves into a group, causing a biased sample with nonprobability sampling.
