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Hi,

I was wondering whether you had any tips on how to calculate a trimmed mean... I have a matrix of forecasting results from different models, and rather than to average them across models, I would like to calculate trimmed means - that is, exclude the highest and lowest observation and average over the rest.

I can think of a couple of complicated ways to do this, but maybe someone has a really easy solution...? :-)

Thanks, Philipp

Something like the following might work for calculating the trimmed means:

or, Or for more general trimming, use the Trim Add-in.

Solution 1 works perfectly!

Thanks, Philipp