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Politics : Mainstream Politics and Economics
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To: koan who wrote (28852)9/27/2012 12:08:16 PM
From: TimF  Read Replies (1) of 85487
 
The standard sampling error assumes an unbiased random selection. It is not the only type of error in poll selection, if your initial sample is biased the result can be off by more, even far more, than the "margin of error".
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