fit parameter errors

From: Guy Roche <>
Date: Thu, 29 Jun 2006 17:01:53 +0200 (CEST)

Dear Rooters,
I am frequently asked about the fit parameters errors given in the statistics/fit info box. People claim that the correlations in between parameters are not included in the parametors errors. Is it right?
>From the screen output of the fit parameters, it is not clear to
me whether the diogonal elements of the error matrix are the only ones taken into account (thus meaning no correlation taken into account).
Well, I was just looking into the TMinuit class, source file section, seems to be the case.
Thanks for your help,
Guy. Received on Thu Jun 29 2006 - 17:02:08 MEST

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