Hi Maria, See http://root.cern.ch/root/htmldoc/TMinuit.html Rene Brun Maria Marchesini wrote: > > Dear Root users > I am a new ROOT user. I am using it actually just to make some simple fit > to a straight line. I would like to know how ROOT calculate the errors on > the parameter of the fit. I mean: suppose you want to make the fit to the > straight line: > y=a+bx > ROOT gives you the value of a,b and the error on them. How does ROOT > caclulate these errors?? > Thank you in advance, > > Maria > > ************************************************************************ > > THE SANDS OF TIME WERE ERODED BY > THE RIVER OF CONSTANT CHANGE > > ************************************************************************* > Maria (Luisa) Marchesini > Department of Physics & Astronomy Tel: ++44-(0)113-2333872 (work) > E.C. Stoner Building ++44-(0)113-2496817 (home) > University of Leeds > Woodhouse Lane LS2 9JT e-mail: mm@ast.leeds.ac.uk > Leeds (U.K.) > *************************************************************************
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