for now, part III is going to be the final chapter of my Plus Minus / box score / tracking data comparison. Basically like 'Return of the Jedi', only with less Ewoks.
After looking at correlations between offensive and defensive Plus Minus and pairs of other data, I decided to look at general plus minus and everything at the same time. Using 17 different statistics, I am going to look at all possible combinations, to find the best ones for predicting the data. All possible combinations are in this case 217-1 = 131071 = a shit load of possibilities. I also decided to add a new type of players to my previous groups of Point Guards, Wings & Bigs, which I called 'Very Bigs'. It's basically only those bigs that are not attempting any three pointer. The idea is to get a more homogeneous group.