The measurement of race and ethnicity in the U.S. has evolved over the centuries, alongside changes in Americans’ views about race and the way race has come to be incorporated into the nation’s laws and policies. Pew Research Center uses a two-question sequence that asks first about Hispanic origin and then about race. The race […]
Telephone polls still provide accurate data on a wide range of social, demographic and political variables, but some weaknesses persist.
Many people wonder: Can polls be trusted? The following essay contains a big-picture review of the state of polling, organized around a number of key areas.
Online nonprobability surveys are fast, cheap, and increasingly popular. We compared nine samples and found that accuracy varied substantially.
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