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View Diary: SUSA's latest 50-state Bush poll (217 comments)

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  •  well, no (none)
    I am not a statistician (but work with samples a lot).  I think that a 600 person sample works for the whole state with a reasonable margin of error, but the margin or error gets huge for regions with just 80 or 90 people surveyed.  It's just too easy to get a biased sample or a few peope having a bad day...  

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