The Permeability Index: How efficient are Premier League teams in defending their goal?

Based on WhoScored.com figures Today, I decided to have a look at the defensive side of the game consisting on the goal protection. This consists of a statistical calculation of a final figure –  that I’ll call the Permeability Index – after several steps ; I’ll try to comment as much as I can the point of the various figures and what it means in terms … Continue reading The Permeability Index: How efficient are Premier League teams in defending their goal?