about ±3%
For a poll of 1,000 people, what is the typical margin of error?
This is the standard trade-off pollsters accept for a sample size that's affordable and fast to collect.
Source: Wikipedia - Opinion poll (2024) en.wikipedia.org
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The earliest known opinion polls in America appeared around which presidential election?
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about 10,000 people
About how many people would a poll need to reach a margin of error of just ±1%?
Cutting the margin of error to a third requires roughly ten times as many respondents.
Source: Wikipedia - Opinion poll (2024) en.wikipedia.org
1938
In what year did researcher Paul Lazarsfeld develop the 'panel' survey method still used today?
Panel surveys ask the same group of people the same questions repeatedly over time to track how opinions change.
Source: Wikipedia - Sampling (statistics) (2024) en.wikipedia.org
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