What is Expected Goals

The statistical analysis of Big Data is probably the most advanced frontier of sport and, more recently, of football. This is true even if we must remember that analyses on the dynamics of football have been present for many years, and we cannot forget that this sport has found writers who, as fans and / or sportsmen, have revived, through their writings, the charm of this game. This article deals with Data Analysis and Statistics applied to football. There are many publications dealing with this topic, but here the attempt is to explain how it can be attractive for secondary school students to learn notions of statistics from the analysis of data concerning the most popular of sports. In this case the analysis focuses on the last years of the Italian Serie A League.