Methods 101: What is machine learning, and how does it work?
We explain the basics of machine learning – using computer programs to identify patterns in data – and how it allows researchers at the Center to analyze data on a large scale.
Numbers, Facts and Trends Shaping Your World
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SXSW 2020 Online Session: Misinformation and the 2020 U.S. Election
Amy Mitchell (Pew Research Center), Philip Howard (University of Oxford), Jane Lytvynenko (Buzzfeed News) and Lori Robertson (Factcheck.org) discuss misinformation during the coronavirus outbreak, and ahead of the 2020 presidential election, as part of SXSW 2020’s virtual sessions.
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Video: Estimating Europe’s unauthorized immigrant population
A new Pew Research Center analysis estimates that at least 3.9 million unauthorized immigrants – and possibly as many as 4.8 million – lived in Europe in 2017. Learn how we conducted the first comprehensive estimate of Europe’s unauthorized immigrant population in over a decade.
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Methods 101: How is polling done around the world?
Polling in different parts of the world can be very challenging, because what works in one country may not work in a different country.
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Methods 101: Mode effects
How does the way a poll is conducted influence the answers people give?
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Methods 101: What are nonprobability surveys?
Our latest Methods 101 video explores some of the ways these surveys differ from traditional probability-based polls.
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Video: Can we still trust polls?
Recent events – including the 2016 presidential election and Brexit – have rattled public confidence in polls. But this video explains why well-designed polls can still be trusted and remain an important way to measure public opinion.
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Video: Being Muslim in the U.S.
This video offers a look inside the beliefs and attitudes of Muslims in America; it features data from Pew Research Center’s 2017 survey, as well as the personal stories of Muslims from across the United States.
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Video: How did we identify Twitter bots?
The Pew Research Center set out to better understand how many of the links being shared on Twitter are being promoted by bots rather than humans. Our analysis found that an estimated two-thirds of tweeted links to popular websites are posted by automated accounts – not human beings.
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Methods 101: Survey Question Wording
The second video in Pew Research Center’s Methods 101 series helps explain question wording – a concept at the center of sound public opinion survey research – and why it’s important.
