[NSRCA-discussion] D3 Championship - Scoring SystemOverhaul-LONG

[Derek Koopowitz]

Yes, I've seen the end result differ slightly with TBL versus using standard
high/low throwout.

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Bob Richards
Sent: Friday, October 19, 2007 10:22 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] D3 Championship - Scoring
SystemOverhaul-LONG


Either.

Derek Koopowitz <derekkoopowitz at gmail.com> wrote: 

At the WC's or at the TOC?  I do have data for all the TOC's since 1998 - I
can't speak for the WC's...

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Bob Richards
Sent: Friday, October 19, 2007 4:49 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] D3 Championship - Scoring
SystemOverhaul-LONG


Is there any data that show the order of pilots was changed due to TBL being
used?
 
No, I don't want to know WHO, just IF.  :-)
 
Bob R.


Derek Koopowitz <derekkoopowitz at gmail.com> wrote:

TBL - scores go back to the pilots as is... raw.  TBL is only factored once
a round is finished and the results calculated.  With TBL scores are
adjusted to the whole score and result in whole numbers.  Remember, the
entire score isn't thrown out - just a maneuver score.  When a score is
dropped then TBL is run on the entire set of scores again to recalculate the
mean and std. deviation - it is an iterative process until all scores fall
within the range that are calculated for the pilots/judges.
 
TBL was used at the TOC for all years starting in 1999 onwards.  It has been
used at the WC since 2001 (I think).
 
Bottom line - the system works very well and in the end the correct order of
finish is picked - which is what we want.  In all the years of scoring with
TBL at the TOC I saw very few judges scores discarded which probably says
more about the quality of judging than anything else.  I'd be very curious
what the results have been at the F3A WC's since it was implemented.
 
I would love to see TBL in use at the Nats for the Finals in both classes -
we certainly have enough judges to support its use.


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