For a poll of 1,000 people, what's the typical margin of error?
Answerabout ±3%
A sample of 1,000 respondents is the classic polling size because it gives a workable ±3% margin of error.
Source: Wikipedia, Opinion polling (2024) en.wikipedia.org
Society · Facts & sources
Survey facts & stats
4 sourced facts about surveys and public-opinion polling, each with the context behind the number. 4 more are in today's round and appear here after it closes.
The basics
Going deeper
When was the first known opinion poll conducted in the U.S.?
Answer1824
A straw poll tallying voter preferences for the presidential election is considered the earliest known opinion poll.
Source: Wikipedia, Opinion polling (2024) en.wikipedia.org
Gallup's World Poll, launched in 2005, covers how many countries?
Answerabout 160 countries
Gallup's World Poll represents more than 98% of the world's adult population across roughly 160 countries.
Source: Wikipedia, Gallup (company) (2005) en.wikipedia.org
Expert level
Through 2018, about how many phone interviews did Gallup conduct daily for its U.S. tracking poll?
Answerabout 500 interviews a day
Gallup ran daily U.S. tracking polls of about 500 interviews a day, 350 days a year, for years.
Source: Wikipedia, Gallup (company) (2018) en.wikipedia.org
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