That is a neater way to do it, but is a bit slower than ;. with the
function stddev:

ts '; (1 1,:400,25)    (stddev@:,);._3  (i. 400 10000)'
4.13437 3.46953e7

   ts '25 (stddev@:,)\ |: (i.400 10000)'
4.60118 6.77667e7

On Sat, Nov 8, 2008 at 3:00 PM, Brian Schott <[EMAIL PROTECTED]> wrote:
> a4 =: 25+/\+/  (i. 400 20000)
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