The analysis in this report is based mostly on a survey conducted November 12-21, 2014 among a sample of 1,835 adults (921 women and 914 men) 18 years of age or older. The survey was conducted by the ...

Results for the survey are based on telephone interviews conducted under the direction of Gallup and Langer Research Associates. The results are based on national samples, unless otherwise noted. More ...

Survey sampling and estimation methods form the cornerstone of modern statistical inference, underpinning research across the social, medical, and natural sciences. At their heart, these methods ...