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Our Methods

Pew Research Center has deep roots in U.S. public opinion research. Launched as a project focused primarily on U.S. policy and politics in the early 1990s, the Center has grown over time to study a wide range of topics vital to explaining America to itself and to the world.
Pew Research Center regularly conducts public opinion surveys in countries outside the United States as part of its ongoing exploration of attitudes, values and behaviors around the globe.
Pew Research Center’s Data Labs uses computational methods to complement and expand on the Center’s existing research agenda.
Pew Research Center tracks social, demographic and economic trends, both domestically and internationally.
Our methodology blog goes behind our research, addressing subjects from survey methods and machine learning to data visualization.
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“Our goal is to make joining and participating in our survey panel just as appealing to rural conservatives as it is to urban progressives.”

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Feature | May 12, 2017
Methods 101: Random Sampling

The first video in Pew Research Center’s Methods 101 series helps explain random sampling – a concept that lies at the heart of all probability-based survey research – and why it’s important.

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