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. Fresh ...

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 ...

Sputum sampling was found to be a valuable method for diagnosing and monitoring patients with coronavirus disease 2019 (COVID-19), according to a recent systematic review and meta-analysis published ...