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Pages 13-15

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From page 13...
... 13 (a) Histogram for Travel Rates (b)
From page 14...
... 14  Skew statistic: Computed as the ratio of (90th percentile travel time minus the median) divided by (the median minus the 10th percentile)
From page 15...
... 15 Because and use all of the observations, they are sensitive to the entire distribution of delays. To illustrate the computation of , assume that a specific facility has a free-flow travel time of 5 minutes.

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