Re: help in generating a gaussian random variable

*To*: mathgroup at smc.vnet.net*Subject*: [mg35510] Re: [mg35488] help in generating a gaussian random variable*From*: Tomas Garza <tgarza01 at prodigy.net.mx>*Date*: Wed, 17 Jul 2002 02:09:00 -0400 (EDT)*References*: <200207160849.EAA24937@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

If what you mean is, you wish to generate a pseudorandom number from a gaussian distribution with mean 0 and variance x, where x itself is a pseudorandom number with a gaussian distribution with parameters (5, 10), then do as follows: In[1]:= << "Statistics`ContinuousDistributions`" In[2]:= distorig = NormalDistribution[0, x]; In[3]:= dist = NormalDistribution[5, 10]; In[4]:= Random[distorig /. x -> Random[dist]] Out[4]= 9.148086435901357 The last input cell produces numbers with the desired properties. Tomas Garza Mexico City ----- Original Message ----- From: "Salman Durrani" <dsalman at itee.uq.edu.au> To: mathgroup at smc.vnet.net Subject: [mg35510] [mg35488] help in generating a gaussian random variable: > Hi > > I need to generate a Gaussian random variable y having mean =0 and variance > =x. > > The variance x is itself a gaussian random variable having a known mean and > variance. > e.g. mean of x =5; > variance of x = 10; > > Can anyone suggest how to use this information to generate y ? > > thanks > > Salman > > > >

**References**:**help in generating a gaussian random variable***From:*"Salman Durrani" <dsalman@itee.uq.edu.au>