Historic probability to finish at a certain position based on previous year's position

Ola

Registered User
Apr 10, 2004
34,597
11,595
Sweden
Its maybe not the most interesting data, but I did a little study looking at how likely it is for a team finishing at a certain position one year, to finish at any given position the next year (its based on all seasons post-lockout).

For me this was interesting because I was wondering how often teams have made big jumps in the standings. Of course everyone knows of examples of teams going from the top to the bottom over night, or vice versa, but I didn't really have a feel for if it was really rare or on the contrary quite usual with big movements. Given that my favorite team, the Rangers, might get Dallas 1st in 2020, I was for example interested in seeing how common it was for a team finishing 15th overall one year, to finish in the different stages of the standings the following season.

I created baskets of 5 to get a bit more even numbers given that the sample size of 14 seasons is a tad small in its context.

Here is the data, for example, a team finishing 1st overall 38% of the time finish 1-5 the following season, 38% of the time finish 6-10, 8% of the time finish 11-15 and so forth.

View attachment 225261
upload_2019-5-7_13-55-2-png.225261


One clear conclusion is that there is little movement in either direction between 1-5 and 25-30, but a team in the cellar sometimes does make the jump up the standings.

Another conclusion is that teams 10-20 in the standings more or less is all over the place the following season, on average. When running the data I got a little insight into which teams made the moves, just looking back and forth at the standings a lot, and my feel was not that these movements were super obvious. I don't think many called all of them in advance.

Vegas has just been surgically removed.

If anyone want my excel-sheet don't hesitate to just drop me a note (I don't think I can upload it, can I?). Feel free to reuse the numbers or sheet in anyway you want and no reference is necessary. A warning, my scripting is extremely inefficient the underlying scripts aren't pretty...
 
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adsfan

#164303
May 31, 2008
12,664
3,706
Milwaukee
With time, you get regression to the mean. I have wondered how Detroit stayed so good for so long. They seemed to be an exception.
 
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abo9

Registered User
Jun 25, 2017
9,087
7,179
What attracts my eyes are positions 18-19-20 which seem to either climb higher or drop in the basement

Then positions 13-14 who have good chances of losing a lot of positions.

Are these just incidental or do you believe there is something to explain that? Like teams at those positions being in a "transition", either completing or starting a rebuild?
 
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Henkka

Registered User
Jan 31, 2004
31,205
12,195
Tampere, Finland
Could you merge those positions also as groups?

And make the middle group larger by 1, so we could see the Top16 (how the playoff proability will act).

Top5
Next5
RestPlayoff6
------------
Next5
Next5
Last 4-5 (adding Vegas -season)
 

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