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May I recommend using percentiles over the average? Reporting the 50th, 75th, 90th, 95th and 99th percentile is much better at describing the situation. Even better is to report a histogram or a kernel density plot of the the observed values.

Averages tend to be a notoriously bad indicator on their own because they don't describe anything about the distribution. This is obviously not a normal distribution, and even if it was, you need to report some kind of variance measurement as well. Otherwise it is hard to say anything about the shape of the distribution, let alone make tests for statistical significance.




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