How can a survey of 1,000 people tell you what the whole U.S. thinks?
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.
Numbers, Facts and Trends Shaping Your World
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Methodology
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 […]
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Methodology
The analysis in this report is based on telephone interviews conducted April 7-11, 2017. These questions were added on April 7. The full survey was conducted April 5-11, 2017, among a national sample of 1,501 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (375 respondents […]
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Methodology
The analysis in this report is based on telephone interviews conducted April 7-11, 2017. These questions were added on April 7. The full survey was conducted April 5-11, 2017, among a national sample of 1,501 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (375 respondents […]
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Methodology
The analysis in this report is based on telephone interviews conducted April 5-11, 2017 among a national sample of 1,501 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (375 respondents were interviewed on a landline telephone, and 1,126 were interviewed on a cell phone, including […]
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Methodology
The analysis in this report is based on telephone interviews conducted April 7-11, 2017. These questions were added on April 7. The full survey was conducted April 5-11, 2017, among a national sample of 1,501 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (375 respondents […]
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Methodology
The analysis in this report is based on telephone interviews conducted April 7-11, 2017. These questions were added on April 7. The full survey was conducted April 5-11, 2017, among a national sample of 1,501 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (375 respondents […]
