
Aug 01, 2013, 09:12 AM  

Here is our latest contest with and without landings. I just went in and zeroed everyone's landing scores.
Is it really a landing contest as is? It's only 5% of the total score. We used 10 meter tapes 50 points max. I was surprised of this, as in this contest most folks were making their task times so I thought it would have become a landing contest. However, only 4th and 5th place swapped out of the entire group. Curtis 
Aug 01, 2013, 10:43 AM  
USA, CA, Chico
Joined Feb 2011
3,140 Posts

Quote:


Aug 01, 2013, 07:55 PM  

Quote:
I am not sure that your analysis really demonstrates anything in particular. First, it can be demonstrated by examining contest results that there is a very strong correlation between contestants who are skilled at flying and contestants that are skilled at landing. To really give this a look, you have to measure the correlation between finish placement and landing performance separately from the correlation between between finish placement and flying performance. It is possible (I have done it on occasion) to determine the correlation coefficient between flight times and final placements. If, for example, everyone maxes all of their flights, the correlation coefficient will be zero  there is no correlation between outcome and flight times. The way we fly, correlation coefficients should properly be determined for NORMALIZED flight scores. Similarly, if everyone maxes their landings, there would be no correlation between outcomes and landings. My experience in looking at contest data suggests that this is far less likely under any circumstances. Generally, there is a wider distribution of landing scores than of flight scores. So, while landings may only count for 5 percent of the total score, they actually account for more (sometimes much more) of the total points in play. In the extreme case where everyone maxes (or where everyone's normalized scores are equal) there are NO flight points in play with regard to the final outcome. Obviously, the extreme case does not happen. But when you consider the competition among the top 1/3 to top 1/5 of competitors, it is very common that the total number of points in play for flying can be very small. In these cases, the landing points are more of a determining factor in the outcome than the flight points. I have been fascinated with how our events "game out" for many years now. One of the best indicators of how many "points are in play" can be measured by the percentage of flights in a contest that are maxed out. One of my favorite examples is the original Masters contest which was flown with 12 minute tasks under very difficult conditions. Less than 5 percent of all of the flights put up maxed and the distribution of the nonmaxers followed a very linear trend to some pretty humbling values. While landings ultimately made a difference in the standings, flying was much more important. On the other hand, I looked at a large contest where nearly 70 percent of the flights put up were maxed. Among the top 20 percent or so of final placements, there was virtually no correlation between normalized flight points and placement. It was a landing contest. It is not unreasonable to look at your contest results and conclude that it was not settled by landings. But one cannot really tell without studying the correlation between flying and final outcomes and the correlation between landing and final outcomes. At any rate, it is a mistake to conclude that just because landings only account for 5 percent of the possible score that landings represent 5 percent of the points that are really in play. Happy Landings, Don 

Aug 01, 2013, 09:56 PM  

Great idea.
Secondly, we'll have new audio files that will announce the round and group at every minute of the countdown, vs. just at the 5 minute warning. We haven't had many guys miss their group at the big contests, but hopefully this will reduce that number to zero.
Randy[/QUOTE] Think this is a great idea for those who are flying/timing/charging or otherwise occupied and not paying enough attention to "where there at". 
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