[R] ifelse command

[David Winsemius]

On Aug 18, 2010, at 10:46 PM, Philip Wong wrote:

>
> well to be honest, it is a assignment for the Bayesian statistic  
> paper I wish
> to take later in the academic year.  But I'm a slow learner, so I'm  
> going to
> try out some of the assignments posted in the university forum  
> hoping to get
> some practice in advance.
>
> Could you please elaborate more on the set.seed() function, I  
> understood
> from the ?set.seed the general idea of set.seed (if I didn't  
> misunderstood
> it).  I could stimulate a six side dice by set.seed(1:6) with n  
> number of
> runs using runif(), does that meant if I use set.seed() I don't need  
> to use
> the prob=c(1,1,2,3,2,1)/10) to create my bias dice?

No. set.seed()'s only purpose is to fix the RNG in a predictiable  
starting state so that the reuslts of one or more simulation runs can  
be recreated exactly.


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David Winsemius, MD
West Hartford, CT