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Box and whisker plots of beginner, intermediate, and advanced snowsports participants' speeds for trails with different slope angles. The bold black line represents the median value, the box is the interquartile range, IQR, (from Q1, 25th percentile to Q3, 75th percentile, the whiskers show the minimum (Q1-1.5∗IQR) and maximum (Q3+1.5∗IQR), and the circles represent outliers.
