How many matches are really needed to determine final rankings?

[Ether]

Originally Posted by tctc

Silicon Valley has 95 matches but 10 rounds. If that is the case, the data has only the last 20 matches.

No, the data uses all 95 matches, then the first 94 matches, then the first 93 matches, .... etc:

Column A is team number, Column B is final OPR (after all Qual matches), Column C is partial OPR after all Qual matches less one, etc

Column B is the OPR using all 95 matches
Column C is the OPR using the first 94 matches
Column D is the OPR using the first 93 matches
.
.
.
Column U is the OPR using the first 76 matches


... so the progression from Column U to Column B shows how the OPR changed over the course of the last 20 matches.



Partial OPRs for all 106 events in Weeks 1 through 6 are posted here:

http://www.chiefdelphi.com/media/papers/3125