report | Jan 26, 2018

For Weighting Online Opt-In Samples, What Matters Most?

A growing share of polling is conducted with online opt-in, or nonprobability, samples. This trend has raised some concern within the industry because, while low participation rates pose a challenge for all surveys, the online opt-in variety face additional hurdles.

presentation | Jan 3, 2018

Public Opinion Research in Sub-Saharan Africa

Pew Research Center hosted a survey methodology workshop on the opportunities and challenges of conducting public opinion research in sub-Saharan Africa to identify and discuss best practices and future directions for the field.

fact sheet | Nov 20, 2017

Facts on Foreign Students in the U.S.

The U.S. has more foreign students enrolled in its colleges and universities than any other country in the world. Explore data about foreign students in the U.S. higher education system.

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