After nearly a decade of fine-tuning, the industry still hasn’t figured out how to reach enough Donald Trump supporters.

the true population value. Sampling errors occur because the sample is not representative of the population or is biased in some way. Even randomized samples will have some degree of sampling ...

Sleep disorders and mental health complications were more common in adolescents or young adults who had HIV across the globe.

The study, published in Science Advances, analyzed data from 43,681 deep-sea dives conducted since 1958, reaching a stunning ...

We know that noisy reefs are healthy, but carefully listening to the sounds made by fish, invertebrates and humans underwater ...

New study finds dinosaurs weren’t declining before asteroid impact; a biased fossil record misled decades of paleontology.

“This small and biased sample is problematic when attempting to characterize, understand, and manage a global ocean,” the authors wrote in the paper. The team showed that it will need a much ...

“What was not highlighted or understood by the lay press or sportswriters was the fact that this was a biased sample of people from families that realized there was something going on regarding ...

Working-class, common-sense Americans voted for Donald Trump and for the most part I’m guessing that – like the Luntz sample – they like what he is doing. For sure, because the president has ...

A multi-method study of over 1,500 Italians found that pasta consumption is consistently associated with increased happiness, ...

NPR strives for balance and diversity in all of its work. But it achieves it most when the stakes are highest — in politics.