Grading the Pollsters

There are lots of different opinion polls. Dhrumil Mehta explains how FiveThirtyEight rates the accuracy of pollsters. Next time you read a story about poll results, check the pollster’s grade here.

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How can a survey of 1,000 people tell you what the whole U.S. thinks?

Random sampling informs all probability-based survey research. The Pew Research Center explains.

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Comments are welcome if they are on-topic, substantive, concise, and not boring or obscene. Comments may be edited for clarity and length.

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