Re: populate a list with random numbers from normal distribution?
- To: mathgroup at smc.vnet.net
- Subject: [mg49870] Re: [mg49855] populate a list with random numbers from normal distribution?
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Thu, 5 Aug 2004 09:20:31 -0400 (EDT)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
Needs["Statistics`ContinuousDistributions`"];
data=RandomArray[NormalDistribution[50000,25000],{1000}];
#[data]& /@ {Mean, Variance, StandardDeviation} // N
{49212.297808892145, 6.388327485991619*^8,
25275.140921450107}
Since you seem to want Integers
data=Round /@ data;
#[data]& /@ {Mean, Variance, StandardDeviation} //N
{49212.299, 6.388324440996987*^8, 25275.134897754724}
Bob Hanlon
>
> From: sean_incali at yahoo.com (sean kim)
To: mathgroup at smc.vnet.net
> Date: 2004/08/04 Wed AM 10:46:33 EDT
> To: mathgroup at smc.vnet.net
> Subject: [mg49870] [mg49855] populate a list with random numbers from normal
distribution?
>
> hello group.
>
> I looked at the help browser but i can't figure this out. I weant to
> make a list of random numbers sampled from a normal distribution
>
> In[90]:= Needs["Statistics`ContinuousDistributions`"]
>
> l1 = Table[Random[NormalDistribution[50000,25000], Integer, {10000,
> 99999}], {1000}];
>
> Variance[l1]//N
> StandardDeviation[l1]//N
>
>
> From In[90]:=
> Random::"randt":
> Type specification NormalDistribution[50000, 25000] in
> <<1>> should be Real, Integer, or Complex.
>
> Out[92]=
> 0.
> Out[93]=
> 0.
>
> thanks in advance for any insights
>
> sean
>
>