[R] data

[peter dalgaard]

On 20 Feb 2014, at 06:07 , IZHAK shabsogh <ishaqbaba at yahoo.com> wrote:

> please, how can i generate ten different estimated parameter with multiple y, response from the following response.

You did. You're just only printing the last one... (sapply(list, coef) to extract the coefficients in matrix form, if that's what you meant. Neater solutions are possible with replicate().) 

-pd


> 
>> true.slope<-5
>> true.err.var<-3.7
>> n.iter<-100
>> s.sample<-10
>> estimates<-matrix(NA,nrow=n.iter,ncol=2) 
>>  
>> list<-list()
>> s.sample<-10
>> x<-10*runif(s.sample) 
>>  
>> for(i in 1:n.iter) {
> + y<-true.intercept+true.slope*x+rnorm(s.sample,mean=0, sd=true.err.var) 
> + list[[i]]<-lm(y~x)
> + }
>> list[[i]]
> 
> Call:
> lm(formula = y ~ x)
> 
> Coefficients:
> (Intercept)            x  
>      12.133        5.447  
> 
>>  
> 	[[alternative HTML version deleted]]
> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com