Re: [R] Servreg $loglik

2010-07-20 Thread Charles Annis, P.E.
--Original Message- From: David Winsemius [mailto:dwinsem...@comcast.net] Sent: Tuesday, July 20, 2010 12:27 PM To: charles.an...@statisticalengineering.com Cc: r-help@r-project.org Subject: Re: [R] Servreg $loglik On Jul 20, 2010, at 11:20 AM, Charles Annis, P.E. wrote: > Dear R-experts: &

Re: [R] Servreg $loglik

2010-07-20 Thread David Winsemius
On Jul 20, 2010, at 11:20 AM, Charles Annis, P.E. wrote: Dear R-experts: I am using survreg() to estimate the parameters of a Weibull density having right-censored observations. Some observations are weighted. To do that I regress the weighed observations against a column of ones. When

[R] Servreg $loglik

2010-07-20 Thread Charles Annis, P.E.
Dear R-experts: I am using survreg() to estimate the parameters of a Weibull density having right-censored observations. Some observations are weighted. To do that I regress the weighed observations against a column of ones. When I enter the data as 37 weighted observations, the parameter estim