Extreme weather seems to make the headlines almost every week, as disasters increasingly strike out of season, break records, and hit places they never have before. Decades of scientific research has ...

You could sift through websites, but some Python code and a little linear regression could make the job easier. You could ...

Alignment and sequencing errors are a major concern in molecular evolution, and this valuable study represents a welcome improvement for genome-wide scans of positive selection. This new method seems ...

Efforts have been underway for years to improve the replicability of research studies, but some are skeptical of the US ...

Five years after a widely revered study was debunked as totally bogus, Helen Coffey asks the experts whether trust in the ...

What the p-value is not The p-value is the probability that the null hypothesis is true. (1 – the p-value) is the probability that the alternative hypothesis is true. A low p-value shows that the ...

So why are two-sided hypothesis tests used? Let us assume, for example, that we register the number of successful outcomes, meaning the number of patients who recover from the disease, in two separate ...

Because we use a 0.05 cutoff for the p value, we reject the null hypothesis and conclude that there is a statistically significant difference between groups. So what does "p = 0.031" mean? It means ...

As the climate warms, scientists expect animals and plants to move to cooler areas—uphill, toward the poles, or into deeper waters. But in a surprising twist, scientists have found that over a third ...

Think you’re seeing the whole picture? Discover how AI and your brain trick you and how scientific thinking can help you ...