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Unread 16-03-2014, 23:08
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Ether Ether is offline
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Re: Week3 cumulative Twitter stats & OPRs

Quote:
Originally Posted by Joseph1825 View Post
I thought I understood what these numbers meant, but I'm confused, so could someone explain somthing to me? I'm with team 1825 and the spreadsheet says we have an OPR of over 80 points (the blue alliance agrees.) but our CCWM is -40, could someone explain what those number mean? Thanks.
I believe the spreadsheet you are referring to is OPR based on Twitter data 3-14-2014 203053 ET revB.XLS.

The numbers are calculated correctly. However: 1) that spreadsheet was prepared from Twitter data from Friday night before you had finished quals (on Saturday), and 2) Twitter contained only 5 of the 8 matches you played on Friday. For such a small data sample size, the OPR may be misleading.

To answer your questions:

Column B is the "standard" OPR, based on final score (which includes awarded foul points).

Column E is unpenalized CCWM... "unpenalized" in this context meaning the awarded foul points are removed from the final score, and CCWM meaning the opposing alliance's score (with awarded foul points removed) is subtracted from your alliance's score for each match. Many folks think removing the foul points gives a better metric for this year's game because of the high value and erratic enforcement* of penalties.

Note: AIUI, Ed does not use the Twitter data to remove foul points if it is not complete for that event. So you won't see unpenalized CCWM for MOKC in his spreadsheet.

update:
Quote:
Originally Posted by Ed Law View Post
4) Quite a few regional/districts this week have incomplete twitter data so adjusted OPRs cannot be calculated for those events..

* I am not faulting the refs. This is a very difficult game to ref and score.



Last edited by Ether : 16-03-2014 at 23:42.
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