The graph below shows the correlation between teams’ shot quality and eFG% over the years. To understand it, know that correlations are measured on a scale from -1 to 1. A correlation of 1.00 means a perfect relationship, a negative-1.00 means a perfect inverse relationship, and a 0.00 means no relationship at all. According to analysis of CtG data, the correlation this season is negative-0.02—meaning, essentially, no relationship at all.