Quote:
Originally Posted by Jim Zondag
Being a former signals guy, I prefer to look at the world like this graph shows.
By comparing the average OPR against the Signal to Noise Ratio of the same data, you can get a singular view of both the overall strength of an event and its competitive balance.
We try to get our District System to produce a DCMP event which as far up and to the right as possible. As high performing and balanced as we can make it.
This makes for an exciting event (and exciting TV  )
The CMP divisions always under-perform the DCMP events on balance, because there are simply more weak teams at the CMP due to the FIRST regional promotion strategies as compared to the district promotion system.
This graph gets pretty cluttered in the center these days with 150 events (i have a little wizard plugin which helps with viewing this)
The CMP divisions are in RED. These points are of course predictive, actual results may vary next weekend.
From this you can see that the Newton division is a pretty big outlier, so like Waterloo, the top teams from Newton will have a real battle to win their division. It should be fun to watch. |
Jim,
I like the chart but I am always suspicious of averages over medians/percentiles. Can you redo the data with each "point" becoming a bar between two points (50%tile & 90%tile say).
Can you explain how each you generate an SNR for each group of teams? I suppose it is the
(average/stdev) but perhaps you have another idea. If you are using average/stdev, I would suggest that the two points for each competition group would be (50%tile/stdev, 50%tile) & (90%tile/stdev, 90%tile). I think this bar would better represent the team groupings. FWIW.
Dr. Joe J.
P.S. What happened to Newton this year is really a fruit of the same seed that produces a lot of the frustration I have with FIRST (I am not saying FIRST is nothing but frustration. I love them. They are doing a lot of great things. But when I get frustrated with them, it is often from the same root cause). Namely, they dither between being a "everyone should to the right thing because it's the right thing and we all agree that right is right and who can be against being right?" and being a robotic sports activity.
Because part of them doesn't want to be a robotic sport, they are completely blind to problems that participants in the robotic sports activities they organize are painfully aware of. Like having 1 division out of 8 be stacked with capable robot teams while others are sparely populated.