2009/9/14 P Bergstr <pal / palbergstrom.com>:
> This is my problem. I have a scale from 0 to 15 and five different
> elements with their own position on that scale. How can I understand if
> they are spread all over the scale, have different positions on the
> scale, or if they are close and nearby each-other?
>
> These are close: 2,3,4,3,2
>
> These are not so close: 2,4,3,12,15
>
> These are spread: 0,5,8,12,15

Sounds like a use case for http://en.wikipedia.org/wiki/Standard_deviation

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/