[R] MLE for Student's t-distribution
Benjamin Dickgiesser
dickgiesser at gmail.com
Wed Nov 15 18:09:49 CET 2006
I need to estimate all parameters (except maybe df). Thank you for
pointing me into a direction, I will have a look.
The aim is to use a fat-tail distribution to calculate the Value At
Risk instead of using the Normal distribution.
Ben
On 11/15/06, Prof Brian Ripley <ripley at stats.ox.ac.uk> wrote:
> On Wed, 15 Nov 2006, Benjamin Dickgiesser wrote:
>
> > Hi
> > is there an easy way/ R-function to calculate the numerical maximum
> > likelihood estimators for a Student's t-distribution?
> > I searched the mailing list archive the last 30mins but didn't find an answer.
>
> See fitdistr() in MASS.
>
> MLE of what, BTW? If you want the MLE of 'df', fitdistr will give it to
> you but beware that its statistical properties are surprising.
>
> --
> Brian D. Ripley, ripley at stats.ox.ac.uk
> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
> University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UK Fax: +44 1865 272595
>
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