What is Facebook Twitter Reddit. Table of Contents. Also read What team did Brett Hull retire with? Also read What ethnicity is Enes Kanter? Also read What is the best NHL record ever? What is box plus minus? Read more. Read on Read later. Answred by. Rolande Wasmund May 31, Add Comment. Did Seth Curry get drafted? Who was born on 29th April?
Encyclopedia and sports reference site, we share sports news and information on a daily basis. Otherwise I think that this would be great for stats as we have stats people who do not understand the wheelchair game let alone basketball Murray NZ. These are great stats. It would be great if you were also tracking the number of picks an offensive player sets that leads to a basket AND the number of passes a team makes before a shot attempt.
I would guess that there would be a huge difference in those stats for Miami and San Antonio in last years finals. Member Login. Free eBooks. But there are problems. Consider the top 10 plus-minus per game players of And JJ Redick? The problem is that some players just get lucky.
David Lee is not the 5th best player in the league. Moreover, Lee gets to play with these players a lot. Golden State plays its starters If we took David Lee out of the lineup and replace him with someone else, could that person achieve the exact same plus-minus? This is the question that adjusted plus-minus seeks to answer. Adjusted plus-minus, on the other hand, is a truly modern NBA statistic, and almost certainly the best single stat we have for rating players.
Before we get into the nitty gritty details, consider the general idea. Say you have three players and they are playing in a 2 on 2 basketball game. The plus-minus splits look like this:.
This will make P3 look good even though P1 is doing most of the work. P3 is the David Lee of this example. How does this work in practice? If you want more details, check out this article by Jacob Frankel , which really gets into the nuts and bolts. First, we have to define the unit of observation. For most adjusted plus-minus models, a row of data is what most people call a stint. The stint is just a period of time in a game where there are no player substitutions. A stint could be 10 minutes or it could be a few seconds.
This is critical to our approach however, since it is similar to the algebraic example I gave above: we need to isolate specific combinations of players. For each stint, we record the plus-minus for that stint and all the players on the floor. Then we run a linear regression that looks a bit like this:. The player variables here are variables that take the value -1 if the player is defending, 0 if the player is off the court, and 1 if the player is on offense.
Once we run this regression on the data, we will get a coefficient back for each player. The coefficients are basically equivalent to the numbers I got when I solved for each player in my toy example. We can add a lot of complexity to this basic framework. We could change the unit of analysis, include other control variables for coaches, playing back-to-back games and etc.
Another common tweak is to use a technique called ridge regression to adjust for collinearity problems. When did the 7th Facebook Twitter Reddit. Table of Contents. Also read What do most hockey players do after they retire?
Also read What year Rudy Fernandez died? Read more. Read on Read later. Answred by. Josef Ostroff June 8, Add Comment.
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