Re: Assymetry and Exces
Rene Brun (Rene.Brun@cern.ch)
Wed, 20 May 1998 08:59:22 +0200
Jan Malinowski wrote:
>
> Helo Rooters,
>
> I have data from some distribution.
> Which functions in the Root library can me calculate
> the estimator of the 3-rd and 4-th momentum of the distribution,
> as well as Assymetry and Exces.
>
> Where can I find any example use this methods?
> Jan Malinowski.
Root histogram filling routines compute 1st and 2nd momentum.
Mean value and standard deviation are always computed from these values.
We do not have methods to compute the 3rd and 4th momentum. This could
be done starting from the bin contents. One could also imagine
a method to compute all the moments from an Ntuple/Tree projection.
Rene Brun