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Re: simple program: help, please!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg34472] Re: simple program: help, please!
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 23 May 2002 03:32:12 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <acffm8$rs5$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

what is "i" ?

Needs["Statistics`ContinuousDistributions`"]

FirstNSum[lambda_?NumericQ, n_Integer] :=
  Module[{sample, sum},
    sample = Sort[Table[Random[ExponentialDistribution[lambda]], {n}]];
    sum = Plus @@ Take[sample, 30];
    {sum/i, sample[[Round[3n/5]]]}
    ]

Table[FirstNSum[1, 50], {100}]


?

Regards
  Jens

_MarioLatens wrote:
> 
> I have to do something like this: I don't know mathematica language but I
> think it can do that...
> 
> for i=1 to 500
> (
>  1) get 50 nubers random from 1 to 100. (to be onest I need exponential
> distribution) and put it in a vector 'v'
> 
> 2) order this vector ('v') :   vo=order_vector (v)
> 
> 3) take the 30th elemente : e=vo[30]
> 
> 4) calculate sum of first 30 elements of vo  :   for(j=1 to 30) s=s+vo[j]
> 
> 5) calculate d=s/i;
> 
> 6) print d, print the vector vo.
> 
> )
> 
> I don't know  mathematica very well and I have to manipulate data in a
> little time so I ask help you: how can I write this programs?
> 
> Thank you in advance, Mario.
> 
> P.S. where can I find nice manual on internet for programming whith
> mathematica?


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