[RC] Ridetimes  was Electrolytes  Truman PrevattThis is a good lead in to comment on the "fastest rides." When you order something there will be a fastest and a slowest, next fastest, next slowest, etc. I've gotten quite a bit of feedback about this wondering the reason a ride is one of the 50 fastest. Of course the "short ride" question comes up.Then I get a few emails (from people other than Steph ) assuring me that the Oreana rides are not short:). There are many reasons a ride can be fast. It can be related to the course difficulty, the weather, the riders that show up, etc. What is important is how does the ride fit into the distribution of all the rides. When you take the ride speeds for all the rides and plot the number at a given speed, the plot will take on resemblance of a bell curve, a big bump in the middle (around the average ride speed of all the rides) and tailing off to fewer and fewer rides as you got away from the mean in both directions. This is the same bell curve most of us learned about in high school and the same one most of use were graded on in school. If a ride has a speed that is too far away from the overall average ride time compared to the rest of the rides, then in just might be an "outlier" and warrant further investigation. An outlier is an event that with a given probability does not belong to the underlying population. In this case an outlier could very well indicate a short trail for that particular ride. The control theory people have developed a pretty robust theory to deal with outliers. There has been no further analysis of the ride speeds to determine if there are any outliers. As soon as this recent crunch at work subsides I intend to look at that along with looking at any candidate outlier and analyzing how the riders in those rides (if any) rode other rides compared to the candidate ride. So while the data on the fastest rides is "food for thought" more work is required to determine with any probability that a ride is "abnormally fast." If there are abnormally fast rides then it probably warrants further investigation to determine why. Truman John Teeter wrote:
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