Learn how representative samples and random samples differ and why combining them minimizes sampling bias for accurate data.

Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

The importance of understanding the role of proteins in diseases—as drugs, drug targets, and biomarkers—has increased remarkably in recent years. In fact, it is now undeniably clear that proteins play ...

Brian Elbing has received funding related to this project from NASA for the balloon activities and the Gordon and Betty Moore Foundation supported his ground measurements. Elizabeth A. Silber has ...