Scientists at Duke-NUS Medical School have found that viruses circulating in live poultry markets can be detected more ...

A Tucson-based cancer biologist is helping lead the development of a new sampling method that can better detect the genetic diversity of tumors using an unlikely tool — a blender. Nelson Alexander, ...

Learn the distinctions between simple and stratified random sampling. Understand how researchers use these methods to accurately represent data populations.

Transparency, methodological gold standards and survey weighting: Those were three of many topics covered during two webinars The Journalist’s Resource recently hosted featuring Roper iPoll, from The ...