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 […]
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 […]
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 […]
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 […]
