The ‘class size paradox’: How individual- and group-level perspectives differ, and why it matters in research
The average class size at a university conveys little about the experience of the average student there.
Numbers, Facts and Trends Shaping Your World
Demographic Research
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Demographic Research
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U.S. Census Knowledge Quiz
Test your knowledge of the U.S. census with our 12-question quiz.
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Measuring community type in Europe, from big cities to country villages
How an outside measure of community type compares with Europeans’ own descriptions of where they live.
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Evaluating what makes a U.S. community urban, suburban or rural
A look at how objective measures of community type compare with the way Americans describe their own areas.
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Q&A: How Pew Research Center estimated the number of unauthorized immigrants in Europe
In this Q&A and video, learn about the methods and data sources the Center used to estimate the number of unauthorized immigrants in Europe.
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Most U.S. adults intend to participate in 2020 census, but some demographic groups aren’t sure
Americans overwhelmingly are aware of the upcoming 2020 census, and more than eight-in-ten say they definitely or probably will participate.
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Measuring illegal immigration: How Pew Research Center counts unauthorized immigrants in the U.S.
Jeffrey S. Passel, senior demographer, on the research techniques used to derive the unauthorized immigrant population estimate in the U.S. and the challenges involved.
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Defining generations: Where Millennials end and Generation Z begins
Pew Research Center now uses 1996 as the last birth year for Millennials in our work. President Michael Dimock explains why.
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Welcome to Decoded!
An introduction to the methodological musings, puzzles and tangles that you would see if you could flip those picture-perfect research products over.
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What to know about the citizenship question the Census Bureau is planning to ask in 2020
The U.S. Census Bureau is planning to ask everyone living in the United States whether they are citizens when it conducts its next decennial census in 2020.
