Overtime incentives study
When an NHL team loses a game in overtime or in a shootout, it still gets a point in the standings. That means that, for overtime games, three points are divided between the two teams. But for non-overtime games, only two points are divided.
So teams have an incentive to allow more games to go into overtime.
I've done a little study to check that. It's still in draft form. You can find it here.
Comments are appreciated.
(Also, if anyone knows if there was a rule change or something responsible for the big jump from 2001-02 to 2002-03, please let me know.)
UPDATE, March 30: study is now updated (same link). I've added some tests suggested by commenters, and suggested some possible reasons for the observed effects.