[R] trimming observations

Juliane Struve juliane_struve at yahoo.co.uk
Wed Aug 19 20:22:57 CEST 2009

Dear list,
the trim argument in mean(x,trim=0.1) can be used to exclude a fraction of the observations when calculating the mean. There does not seem to be a trim argument for sd(), is there some other way of excluding observations when calculating the standard deviation ? 
Many thanks for help or suggestions,

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