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

Establishing a common language for the stakeholders in stratified medicine — including drug developers, diagnostic companies, regulators and payers — could help tackle the complex challenges posed by ...

It’s a truism that even large samples can be misleading if they are biased or, as market and social researchers say, if they are not representative for the universe. Therefore, it is essential whether ...