Hi all,
Is it possible to have a trimmed mean on graylog filed statistics.
A trimmed mean is a method of averaging that removes a small designated
percentage of the largest and smallest values before calculating the mean.
After removing the specified observations, the trimmed mean is found using
a standard arithmetic averaging formula. The use of a trimmed mean helps
eliminate the influence of data points on the tails that may unfairly
affect the traditional mean.
For example i have a set of iis "time taken" responses like:
{90,89,92,91,5 1000 } mean = 227,8
but excluding the outliers (5) and 1000 we have
{90,89,92,91(,5) (,1000)} mean = 90.5
Basically what i wanted to do is compute the mean of the middle 90% of my
data, ignoring the top and bottom 5%. Of course, these numbers can vary,
but that's the general idea.
Regards
Yiannis
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