NBA Estimated Impact A player rating that uses elements from the box score only.
- 1952-2015 Estimated Impact
- 1952-2014 Playoffs Estimated Impact
- Career Estimated Impact
- Weights for box score elements were found via regression onto rapm. Estimated Impact has much more predictive value than other popular box score metrics such as PER or Win Shares.
NBA Non Prior Informed RAPM (“NPI RAPM”) A player rating that is based on team point margins in stints where the player was on the floor. This is the most basic version of RAPM and only uses data from the year in question.
NBA Prior Informed RAPM (“PI RAPM”) A version of RAPM that uses information from previous seasons to increase stability and predictive accuracy.
NBA Boxscore Informed RAPM (“BI RAPM”) A version of RAPM that uses information from the box score to increase stability and predictive accuracy. In this version, RAPM is calculated with estimated impact, rather than 0, as the prior, then mean regressed somewhat.
Pace and Ratings (1952-2013) An estimation of each team’s possessions and the rates at which they use those possessions.
NBA Average Height by Position and Year (1952-2014)