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Re: eliminate values while caculating Mean[data]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg91960] Re: [mg91946] eliminate values while caculating Mean[data]
  • From: "Thomas Dowling" <thomasgdowling at gmail.com>
  • Date: Mon, 15 Sep 2008 03:40:33 -0400 (EDT)
  • References: <200809130957.FAA03553@smc.vnet.net>

Hello,

There are probably many strategies.  Just a few worth considering ...


Mean[Cases[data, Except[0]]]

or

Mean[Cases[data, x_ /; 1 <= x, Infinity]]

or

Mean[DeleteCases[data, 0]]

or, using Select,

Mean@Select[data,#>0&]

Tom Dowling



On Sat, Sep 13, 2008 at 10:57 AM, Pasha Karami <karami at geo.uu.nl> wrote:

> Dear all,
>
> An easy question:
> I would like to make an average of a data file.I know that we can use
> Mean function for this.
>
> However, I want to  eliminate some values from my data.For example if I
> have
>
> data={1,2,3,4,5,0,0,0}
> Mean[data] would be 15/8
>
> I do not want the "zero" values in my Mean function (i.e.I want the mean
> value to be 3 in the above example) How can I do this?
>
> Thank you!
> Best,
> Pasha
>
>
>


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