Monday, January 9, 2017

Deflategate follow up: Game charts for all 30 NBA teams

In my NBA deflategate analysis, I shared charts for several teams that showed game by game coefficient of restitution for home games. Coefficient of restitution is a measurement of the ball's "bounciness". The point was to see if there is evidence of certain teams either over or under inflating their game balls.

As I called out in that post, there is no clear evidence of cheating in the data, but there do appear to be home teams that show a clear bias to one end of the bounciness range. You can see for yourself in the charts below which teams those are.

Each red dot represents a home game for the particular team. The gray dots are all NBA games for which I have data, and help provide context as to whether a team is an outlier.

































2 comments:

  1. Awesome work. It might be interesting to dig into the differences between the Lakers and Clippers, since they share the same floor (I believe).

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    1. The Clippers and Lakers play in the same arena, but not on the same floor. The floor gets switched between home games for the Kings (ice hockey), Clippers, and Lakers.

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