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Reply #10: I understand why MoE should be around 2%, but why does their site say 4%? [View All]

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tritsofme Donating Member (1000+ posts) Send PM | Profile | Ignore Wed Dec-08-04 12:44 AM
Response to Reply #5
10. I understand why MoE should be around 2%, but why does their site say 4%?
The margin of error for a 95% confidence interval is about +/- 3% for a typical characteristic from the national exit poll and +/-4% for a typical state exit poll. Characteristics that are more concentrated in a few polling places, such as race, have larger sampling errors. Other nonsampling factors may increase the total error

http://www.exit-poll.net/faq.html#a15

And why do they say their national MoE should be 3%, when a sample of over 13,000 with a 95% confidence interval should clearly be under 1%?
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