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

The Arizona Department of Education said on March 12 that claims that 20% of ESA purchases are fraud is a misrepresentation.

While beating an AI at a board game may seem relatively trivial, it can help us identify failure modes of the AI, or ways in which we can improve their training to avoid having them develop these ...

Flock cameras can be found in communities across the country. There are more than 30 in the City of Milwaukee alone. Now, ...

The City of Bloomington has announced the launch of its 2026 Community Survey, continuing a practice in place since 2017 of engaging ...

Self-related information automatically modulates early attentional selection into awareness through mechanisms distinct from physical salience, revealing an obligatory, individualized ...

When Bengaluru police fanned out across colleges and hostels on March 4 to collect urine samples from students as part of a ...

Prasanta Chandra Mahalanobis, the Indian statistician who founded the Indian Statistical Institute and pioneered large-scale sample survey methodology, changed how the world collects data. His methods ...

We highlight why transparency matters in opinion polling — plus more from two recent webinars with the Roper Center.

The original story “ Physicists build a quantum Newton’s cradle where energy flows without resistance ” is published in The ...

Antonio Wiley’s mother, Anita, vanished during a time when her hometown Detroit was wracked by drugs and crime. It took three decades and an extraordinary effort by a missing persons detective to ...