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

Hydroxychloroquine, chloroquine, and remdesivir are among the drugs commonly discussed as treatments for the new viral infection, coronavirus disease 2019 (COVID-19). Previously, I described different ...

The University of Ghana has announced it will conduct an open, random allocation of available on-campus beds for first-year students next Monday, January 12, 2026. The exercise is part of the ...

The opportunity to capture the day to day life of a small community has been a special blessing for many decades, and 2025 was no different. From a special ceremony honoring graduates and ...

Practically all citizens agree that the federal judiciary is critically important to our democracy. For citizens to have confidence in and respect for the judiciary, it must be above suspicion. To ...

aDivision of Nephrology, The Hospital for Sick Children, Toronto, ON, Canada bChild Health Evaluative Sciences, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada cInstitute of ...

Canonical economic theory clearly predicts means-tested transfers will reduce work. We provide new evidence on this question in the context of the Supplemental Nutrition Assistance Program (SNAP)—the ...

In a standard paper assignment setting, a set $\mathcal{P}$ of $n^{(p)}$ papers needs to be assigned to a set $\mathcal{R}$ of $n^{(r)}$ reviewers. To ensure each ...

This article was featured in One Great Story, New York’s reading recommendation newsletter. Sign up here to get it nightly. Chungin “Roy” Lee stepped onto Columbia University’s campus this past fall ...

Back in the1980s came a bumpersticker that advised us to “Practice Random Acts of Kindness.” It was early virtue signaling, meant less to instruct others in proper behavior, more to cast the car’s ...