Numbers, Facts and Trends Shaping Your World
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Most of the analysis in this report is based on telephone interviews conducted April 19-23, 2017 among a national sample of 1,028 adults, 18 years of age or older, living in all 50 U.S. states (414 respondents were interviewed on a landline telephone, and 614 were interviewed on a cell phone, including 383 who had […]
Survey conducted Aug. 15-21, 2017 The analysis in this report is based on telephone interviews conducted Aug. 15-21, 2017 among a national sample of 1,893 adults. The interviews were conducted among adults 18 years of age or older previously interviewed in one of two Pew Research Center surveys conducted June 8-18, 2017, of 2,504 adults […]
The analysis in this report is based on telephone interviews conducted June 8-18, 2017 among a national sample of 2,504 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (628 respondents were interviewed on a landline telephone, and 1,876 were interviewed on a cell phone, including […]
The analysis in this report is based on telephone interviews conducted June 8-18, 2017 among a national sample of 2,504 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (628 respondents were interviewed on a landline telephone, and 1,876 were interviewed on a cell phone, including […]
The first video in our “Methods 101” series is about random sampling, a concept that undergirds all probability-based survey research. Here’s how it works.
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.
The trend analysis in the report relies on data from multiple Pew Research Center surveys that have been combined, by year, to minimize the sampling error. The combined surveys were national surveys of U.S. adults conducted using live telephone interviewing and random-digit-dial (RDD) sampling. Surveys conducted before 2007 featured landline RDD samples. Surveys conducted in […]
