Dear Sir,

I am using R to estimate two parameters in Normal distribution. I generated 100 normal distributed numbers, on which to estimate the parameter. The syntax is:

fn<-function(x)-50*log((y)^2)+50*log(2*pi)-(1/2*(z^2))*(sum((x-y)^2))
out<-nlm(fn, x, hessian=TRUE)

but it does not work. Could you please help me to compose the syntax for the purpose that find maximum likelihood estimates of the generated random numbers by direct maximization of the likelihood function?


Thanks a lot.

Best regards
Edward Sun

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