Hi,
> -----Original Message-----
> From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]
> Sent: Sunday, February 15, 2004 10:24 PM
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: Re: [R] Maximum likelihood estimation in R
>
> Hello,
>
> Use
>
> > x=rnorm(100, mean=3, sd=1)
> > library(MASS)
> >fitdistr(x, "normal")
> mean sd
> 2.93666631 0.99673982
> (0.09967398) (0.07048015)
>
For me, this example does not work. As it looks like copy+paste, I
guess this something platform dependent? At least I have to specify some
starting values as shown below. But maybe I did something wrong?
Best,
Roland
(I am using at the moment R 1.8.1 on WinNT)
> x=rnorm(100, mean=3, sd=1)
> library(MASS)
> fitdistr(x, "normal")
Error in fitdistr(x, "normal") : 'start' must be a named list
> fitdistr(x, "normal", start=list(mean=1, sd=0.4))
mean sd
3.03167815 1.06637851
(0.10663786) (0.07539617)
>
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