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How political polls work Free MP3 Download

Canada Election: How political polls work

192 Kbps 0 2:22

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Are Polls Trustworthy?

192 Kbps 19.36 MB 13:46 2064

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How Do Election Polls Work?⎢Civics in a Minute⎢TakePart TV

192 Kbps 2.86 MB 2:02 179

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Here's how a poll of 1,000 people represents the entire country

192 Kbps 8.34 MB 5:56 56

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Pros and cons of public opinion polls - Jason Robert Jaffe

192 Kbps 6.21 MB 4:25 1390

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What Is The Science Behind Polls?

192 Kbps 6.38 MB 4:32 1776

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