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Old 18th November 2014, 02:30 PM
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Originally Posted by rich View Post
From a purely statistical point of view, it is also possible that a shooter is lucky on the day and gets a score above what he or she "deserves" from their grade position. So there is a case to say, top and tail the data by removing the worst score and removing the best score as well.
You're absolutely right. If we'd like to know somebody's real position then the top 5% and bottom 5% of the stastics should be removed from the averaging.

Removing also the second worst score makes sense, though, because everybody can have extremely good and extremely bad days, but a gun failure can happen, too. So, rolling 20 but removed best 1 and worst 2 would work fine.
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