[R] help for MLE

Edward Sun edwardweisun at hotmail.com
Sun Feb 22 20:12:13 CET 2004

Dear Sir/Madam,

I am using R version 1.8.1. I am doing following tast:

First generate 100 Gaussion(3,1) numbers, then write the likelihood function 
to estimate the parameters of Gaussian distribution by direct maximizing the 
likelihood function.

My likelihood function is:

After I input above function, the '' >'' turned to be '' + ''. and it did 
not work.

I am looking for the help to solve this tast by writting a likelihood 

Thanks a lot.

Best regards.
edward sun
>x=rnorm(100, mean=3, sd=1)
fitdistr(x, "normal")


>fitdistr(x, "normal", list(mean=0, sd=1))

do not work.

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