What is the chi-squared test? The chi-squared test, often written as χ 2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are ...

The prominence of statistics in football continues to provide great debate between supporters. Expected Goals — or often better known as xG — has certainly split opinion but that particular metric ...

My name is Chris Zambri, and I am the head coach for the United States National Development Program. I want to talk about a concept that has changed the way the best players in the world, and so many ...