A simple random sample is a subset of a statistical population where each member of the population is equally likely to be ...

Salimetrics' Participant Sampling Packs handle sample organization tasks so researchers can focus on the science.

Daniel McDonald and Jack Gilbert (both University of California, San Diego; CA, USA) discuss the challenges faced during fecal sample collection and highlight important factors to consider when ...

We collaborate with the world's leading lawyers to deliver news tailored for you. Sign Up for any (or all) of our 25+ Newsletters. Some states have laws and ethical rules regarding solicitation and ...

verybody has a favorite color and season—preferences that seem innate, always defying reason. Auditors are no different when it comes to haphazard sampling, a process in which—ideally—they choose ...

Power analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required sample size for ...

Researchers tested a new self-preserving filter housing system that automatically preserves eDNA from water samples, while reducing the risk of DNA contamination and plastic waste. Scientists who use ...