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XG PR should be the new standard

Posted By: Phil Simborg
Date: Monday, 14 December 2009, at 3:10 p.m.

In Response To: XG PR should be the new standard (neilkaz)

Thanks for these tips, Neil. The comparing of errors to XG has been driving me nuts since I got this software and I wasn't aware you could change it by unchecking this little box!

Perry and I have been discussing PR with Xavier and we also believe PR will become the "standard" for comparing play. More study has to be done to see exactly how ER and PR compare, but here is what Xavier sent me (and Perry) on this subject:

Just a quick test about PR vs. ER

Using my online games, I calculated my PR and ER on each individual game (18900 games) PR: 5.87 (standard deviation 6.99) ER: 6.19 (standard deviation 8.32) Average( abs(PR-ER) ) : 1.33 with a deviation of 2.73

The fact that the standard deviation is lower using PR shows it is a more reliable source.

Making the calculation on each overall match (7900 match/session) PR: 5.51 (standard deviation 4.30) ER: 5.30 (standard deviation 4.37)

As expected on longer set of data they get closer. But again the game PR is closer to the match PR

Xavier Dufaure de Citres

Messages In This Thread

• Drifting in space
  neilkaz -- Sunday, 13 December 2009, at 4:00 a.m.
  • XG PR
    W Womack -- Sunday, 13 December 2009, at 3:35 p.m.
    • XG PR
      rew -- Sunday, 13 December 2009, at 4:35 p.m.
    • XG PR should be the new standard
      neilkaz -- Monday, 14 December 2009, at 4:36 a.m.
      • XG PR should be the new standard
        jdg -- Monday, 14 December 2009, at 2:26 p.m.
        • XG PR should be the new standard
          Iancho Hristov -- Monday, 14 December 2009, at 8:18 p.m.
          • XG PR should be the new standard
            neilkaz -- Monday, 14 December 2009, at 8:21 p.m.
            • XG PR should be the new standard
              Iancho Hristov -- Tuesday, 15 December 2009, at 4:46 a.m.
              • XG PR should be the new standard
                Rich Munitz -- Tuesday, 15 December 2009, at 4:54 a.m.
                • XG PR should be the new standard
                  Iancho Hristov -- Tuesday, 15 December 2009, at 4:58 a.m.
                  • XG PR should be the new standard
                    rew -- Tuesday, 15 December 2009, at 8:58 a.m.
                    • XG PR should be the new standard
                      Rich Munitz -- Tuesday, 15 December 2009, at 1:35 p.m.
                    • XG PR should be the new standard
                      Phil Simborg -- Wednesday, 16 December 2009, at 2:48 p.m.
                      • XG PR should be the new standard
                        Neil Robins -- Wednesday, 16 December 2009, at 3:34 p.m.
                      • XG PR should be the new standard
                        Rich Munitz -- Wednesday, 16 December 2009, at 3:42 p.m.
                      • PR, ELO, outplays, etc.....
                        neilkaz -- Wednesday, 16 December 2009, at 6:16 p.m.
                  • XG PR should be the new standard
                    neilkaz -- Tuesday, 15 December 2009, at 4:12 p.m.
                    • XG PR some data
                      Iancho Hristov -- Tuesday, 15 December 2009, at 8:40 p.m.
                      • Thx..were outplays turned on or off? *NM*
                        neilkaz -- Wednesday, 16 December 2009, at 4:03 p.m.
                        • Thx..were outplays turned on or off?
                          Iancho Hristov -- Wednesday, 16 December 2009, at 8:36 p.m.
                          • Thx *NM*
                            neilkaz -- Wednesday, 16 December 2009, at 8:59 p.m.
      • XG PR should be the new standard
        misja -- Monday, 14 December 2009, at 2:48 p.m.
      • XG PR should be the new standard
        Phil Simborg -- Monday, 14 December 2009, at 3:10 p.m.
      • Reply to Phil, Misja, and jdg
        eXtreme Gammon -- Monday, 14 December 2009, at 4:01 p.m.
        • Reply to Phil, Misja, and jdg
          Michael Depreli -- Monday, 14 December 2009, at 4:29 p.m.
        • Reply to Phil, Misja, and jdg
          mtuhtan -- Tuesday, 15 December 2009, at 3:34 p.m.
      • i saw Neil msg and understand, ty *NM*
        Iancho Hristov -- Tuesday, 15 December 2009, at 5:01 a.m.