R help - Mar 2009 - Help plotting a histogram of X~Exp(1)

I want to plot a histogram of X~Exp(1) where X is the sum of Y + Z. To do
this, should I simulate values of Y and Z using Y<-runif(100) and
Z<-runif(100)? And where do I go from there?

Many thanks.
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If you run this you get sensible output, but whether it meets you  
needs depends on what you meant by Exp(1):

 > Y <- rnorm(100)
 > Z <- rnorm(100)
 > X <- exp(Y+Z)
 > hist(X)

If you are looking for methods to handle random variables in R, you  
may want to look at the series of packages all beginning with "distr":
    distr, distrDoc, distrEx, distrMod, distrSim, distrTeach, distrTEst.

-- 
David Winsemius
On Mar 22, 2009, at 7:19 AM, BowlesMcCann wrote:
>
> I want to plot a histogram of X~Exp(1) where X is the sum of Y + Z.  
> To do
> this, should I simulate values of Y and Z using Y<-runif(100) and
> Z<-runif(100)? And where do I go from there?
>
> Many thanks.
> -- 
> View this message in context:
http://www.nabble.com/Help-plotting-a-histogram-of-X%7EExp%281%29-tp22645091p22645091.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT

Thank you very much!
 
:)



David Winsemius wrote:
> 
> If you run this you get sensible output, but whether it meets you  
> needs depends on what you meant by Exp(1):
> 
>  > Y <- rnorm(100)
>  > Z <- rnorm(100)
>  > X <- exp(Y+Z)
>  > hist(X)
> 
> If you are looking for methods to handle random variables in R, you  
> may want to look at the series of packages all beginning with
"distr":
>     distr, distrDoc, distrEx, distrMod, distrSim, distrTeach, distrTEst.
> 
> -- 
> David Winsemius
> On Mar 22, 2009, at 7:19 AM, BowlesMcCann wrote:
> 
>>
>> I want to plot a histogram of X~Exp(1) where X is the sum of Y + Z.  
>> To do
>> this, should I simulate values of Y and Z using Y<-runif(100) and
>> Z<-runif(100)? And where do I go from there?
>>
>> Many thanks.
>> -- 
>> View this message in context:
>>
http://www.nabble.com/Help-plotting-a-histogram-of-X%7EExp%281%29-tp22645091p22645091.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
> 
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
> 
:clap::clap::clap:
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