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If I have a set of results like this one: {1, 3, 2, 5, 8, 1, 100, 150, 1, 3, 8, 3000}
And I want to calculate an average disregarding values that are really different from most of the result set {100, 150, 3000} is there any formula I can apply?

Thanks in advance (hope I haven't broken any rule from this SE) :)

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This might help. – joriki Feb 8 '12 at 12:24
If you don't get any answers here you could try Cross Validated. – E.O. Feb 8 '12 at 12:39
The median yields a possible solution to your problem. – Hagen Knaf Feb 8 '12 at 13:19
Here's a specific post on Cross Validated that discusses several approaches to your problem:… – ItsNotObvious Feb 8 '12 at 14:32

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