APBRmetrics

The idea is to force league PER to be 15, which will then be average. So you add up every player's (min*aPER) and divide by total league minutes to get league avg aPER. It will be close to 15 but not exactly. Multiply every player's aPER by (15/lg_aPER). Now when you sum everyone's (PER*min) and di...

I've got the formula for PER down pat, but this part is where I run into some trouble: "The final step is to standardize aPER. First, calculate league average aPER (lg_aPER) using player minutes played as the weights. Then, do the following: PER = aPER * (15 / lg_aPER) " It's possible I'm ...