Very nicely done.
I've attempted something similar but on a smaller scale -- figuring out, with stats, what separates a championship Spurs team from a non-championship Spurs team in the Tim Duncan era. Meaning, could I find common statistical characteristics that linked the '99, '03 and '05 clubs.
It's a pretty interesting task, especially because the Spurs had some non-championship teams that put up impressive numbers across the board. I haven't put too much time into it, but I have yet to be successful.
Yep, this is exactly what you can do pretty easily with this kind of analysis AFTER you have a correct way of assessing the significance of all the variables.
For example, looking at the five major factors that came out of my (incorrect) analysis:
Code:
SA Spurs League Rankings over the years
Win% Pt.diff TRdiff Blkdiff DFG% DFT%
1977 9.5 12.0 21.0 5.0 22.0 2.0
1978 3.0 4.0 21.0 2.0 13.0 8.0
1979 4.5 1.0 14.0 4.0 4.0 10.0
1980 9.5 11.0 13.0 21.0 21.0 6.0
1981 6.0 6.0 1.0 4.0 8.0 4.0
1982 6.0 7.0 7.0 4.0 9.0 22.0
1983 4.5 6.0 2.0 11.0 11.0 22.0
1984 16.5 13.0 12.0 10.0 19.0 10.0
1985 11.5 10.0 6.0 14.0 17.0 21.0
1986 15.0 14.0 13.0 13.5 16.0 23.0
1987 20.0 21.0 12.0 21.0 22.0 5.0
1988 18.0 19.0 20.0 18.5 23.0 19.0
1989 22.5 22.0 21.0 22.0 18.0 18.0
1990 4.0 8.0 5.0 2.0 3.0 15.0
1991 5.5 6.0 1.0 2.0 1.0 10.0
1992 10.5 9.0 5.0 3.0 1.0 24.0
1993 8.0 8.0 17.0 3.0 4.0 26.0
1994 6.5 4.0 1.0 5.0 4.0 4.0
1995 1.0 4.0 3.0 10.0 7.0 2.0
1996 4.0 4.0 15.0 3.0 3.0 6.0
1997 27.0 28.0 21.0 16.0 25.0 16.0
1998 6.5 8.0 4.0 1.0 1.0 16.0
1999 1.5 1.0 8.0 2.0 1.0 2.0
2000 5.5 3.0 5.0 4.0 5.0 3.0
2001 1.0 1.0 6.0 2.0 2.0 9.0
2002 2.5 3.0 12.0 3.0 4.0 29.0
2003 1.5 3.0 12.0 5.0 3.0 24.0
2004 3.0 1.0 2.0 3.0 1.0 9.0
Highly ranked Spurs teams that didn't win it:
1979: #1 in point differential, lost to the Bullets in Game 7 of the ECF
1981: #1 in rebounding diff. Had a cakewalk to the NBA Finals when Houston upset LA in the first round, but instead lose game 7 to Moses & Co. in the WCSF.
1991: #1 in rebounding diff and #1 in DFG%. Strong team but Nellie goons it up and depants Larry Brown in the first round.
1992: #1 in DFG%. Lost to PHX in first round.
1994: #1 in rebounding diff. Lost to Utah in first round.
1995: #1 record, strong across the board EXCEPT for relatively weak DFG% ranking. Got Dreamshaked out of the WCF.
2001: #1 record and point diff, #2 DFG%. Destroyed by Lakers in WCF.
2004: top 3 across the board. Maybe stastically the Spurs' strongest team. Lost to PJax's coaching and 0.4*.
Spurs teams that won it (2005 stats not included)
1999: tied for #1 record, #1 in point diff., #1 in DFG%
2003: tied for #1 record, #3 in point diff, #3 in DFG%
Note that the Spurs have been strong in DFG% since DRob arrived, even despite Bob Hill's coaching.
One thing to consider as far as using stats to predict a championship, I would think that the most telling (and most accurate) stats would be if you could split the season in half and only use second half stats. There have been a lot of teams that peak late in the year that go on to win championships (Heat in '06, Spurs in '03, etc.) and by the time the playoffs roll around, the stats for the first half of the year I don't think would mean much. For example, the Heat were a much better defensive team in the second half of the year than the first half of the year, but if you just look at the end of season numbers, they look like one of the worst defensive teams to win a championship.
The main problem though is those numbers split like that don't exist
I agree. In fact, if those number were avialble, it would be straightforward to test whether they were a better correlation than the first-half or overall record.