[R] Standar errors arma models

2006-12-06 Thread Paulino Perez Rodriguez
Why the standadard errors of the coefficientes of the arma models fited by using the arima procedure in the stats package doesnt coincide with that of S+, minitab or SAS? -- Este mensaje ha sido analizado por MailScanner en busca de virus y otros contenidos peligrosos, y se considera que

Re: [R] Standar errors arma models

2006-12-06 Thread Prof Brian Ripley
On Wed, 6 Dec 2006, Paulino Perez Rodriguez wrote: Why the standadard errors of the coefficientes of the arma models fited by using the arima procedure in the stats package doesnt coincide with that of S+, minitab or SAS? Possibly because R is using superior methodology (full ML fitting).