Re: Assymetry and Exces

From: Rene Brun (Rene.Brun@cern.ch)
Date: Wed May 20 1998 - 08:59:22 MEST


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



This archive was generated by hypermail 2b29 : Tue Jan 04 2000 - 00:34:33 MET