Statistics becomes far more interesting when it answers real questions. The best projects move beyond formulas and into real-world decisions. These ideas turn raw data into insights that reveal ...

There has been much talk about the cognitive abilities of Trump as he has struggled recently to speak clearly at press conferences and has spent many hours posting on social media late at night. The ...

In October 2024 I attended a workshop at Harvard University where mathematicians talked through the uses of artificial intelligence in their field. Most were less worried about the future of math than ...

When researchers conduct many statistical tests simultaneously, the chance of obtaining false positives increases. Traditional methods for multiple comparisons, such ...

Statistical models predict stock trends using historical data and mathematical equations. Common statistical models include regression, time series, and risk assessment tools. Effective use depends on ...

Journal Editorial Report: The week's best and worst from Bill McGurn, Allysia Finley and Kim Strassel. Photo: Mathieu Lewis-Rolland/Getty Images/Marco Iacobucci/Zuma Press/David Paul Morris/Bloomberg ...

During his Ph.D. research, mathematician Tyron Lardy worked on a new approach to hypothesis testing. Instead of the traditional p-value, he uses so-called e-values. These turn out to be more ...

The deltatest package provides deltatest(), a function for performing two-sample Z-tests using the delta method. It is designed for common settings in online A/B testing where: randomization is done ...