Selection bias means you are not choosing random people to ask.
For example, let's say I wanted to find out how popular the Cellar was compared to other websites, so I posted a poll on the Cellar about it. My results would show that almost 100% of people think the Cellar is awesome! But that would be utterly false because of selection bias.
Last edited by Clodfobble; 11-29-2007 at 05:27 PM.
Reason: holy grammar, Batman!
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