Discover how simple random sampling ensures accurate and unbiased population research, offering efficiency and fairness over ...

The first video in our “Methods 101” series is about random sampling, a concept that undergirds all probability-based survey research. Here’s how it works. Fresh data delivered Saturday mornings Thank ...

Learn how acceptance sampling improves quality control by evaluating random samples. Discover its methods, benefits, and historical significance in manufacturing.

The rise of internet polling makes it more feasible to publish estimates for Asian Americans. But these estimates offer a limited view. What does the migration to online polling mean for the country’s ...

A salt marsh harvest mouse walks across the bulrush at Grizzly Island Wildlife Area in San Francisco. (Cody Aylward/UC Davis) From species of marmots to moles, shrews and mice, many of the world’s ...

Traditional grab sampling methods require supplementary devices such as electric pumps, batteries, charging devices, calibrators, tubing, connectors, and auxiliary equipment. The collection of whole ...