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MathGroup Archive 2007

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Re: Means

  • To: mathgroup at
  • Subject: [mg73899] Re: [mg73879] Means
  • From: Bob Hanlon <hanlonr at>
  • Date: Sat, 3 Mar 2007 00:50:37 -0500 (EST)
  • Reply-to: hanlonr at

Mean[list[[All, 2]]]

Bob Hanlon

---- "JGBoone at" <JGBoone at> wrote: 
> I was wondering if anyone knew how to take the mean of only half of a
> paired order. I have a table of 3000 pairs and want to take the
> average of the last half of the last number in the pair. I do this by
> N[Mean[Map[Last, list]]] is there any way to map to the last half of
> the list. Thanks

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