This report included six online platforms used for public polling. Three are opt-in survey panels or “marketplaces.” One is an opt-in crowdsourcing labor website. Two are survey panels that interview ...

Quantitative methods (i.e., statistics) are used often to answer important social questions. Sociologists, economists, political scientists, and other social researchers rely on large data sets built ...

Collectively, recreational fisheries can take a significant fraction of the yearly catch—in some cases more than commercial fisheries. It is important that systems used to monitor fishing catch are ...

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 ...

A study by researchers using a seldom-used methodology turned up many more Eastern spadefoots, an endangered primitive frog, than they expected. The rarest frog in Rhode Island may not be as rare as ...

The random-digit-dial survey (RDD) was conducted according to Pew Research Center’s standard protocol for RDD surveys. Interviewing occurred April 25 through May 1, 2018, with 1,503 adults living in ...