Re: [fluka-discuss]: Data merging statistics

From: Chenyen Lee <chenyenlee_at_gmail.com>
Date: Sun, 26 Jan 2014 20:10:14 +0800

Dear Andrea:

Thank you very much.
It finally makes sense to me nowŁ˛

Lee


2014-01-26 <Andrea.Mairani_at_mi.infn.it>

> Dear Chenyen,
> About statistical error you can read for example the last 4 slides of the
> this presentation that explains how to interpret the results from a MC
> calculation and it gives you some practical tips
> (
> https://fluka-course.web.cern.ch/FLUKA-Course/Lectures_pdf/c04_StatSampl.pdf
> ).
> If you perform a single run by convention the statistical error is printed
> as 99%.
> Best Regards,
> Andrea
>
>
> > Dear forum :
> >
> > I would like to ask about a question about the data merging.
> > Performing a single run with 1e5 particles, I will get a statistical
> error
> > is +/- 99%.
> > But If I perform a continue run with 2 x 5e4 particles or 2 x 1e5
> > particles,
> > and then do the data merging,the statistical error is less than 1%.
> > Please advise me where I'm doing wrong ?
> >
> > Thanks in advance
> >
> > --
> > 03-3281200-3591
> > 0972164977C
> > henyen Lee
> > Department of Nuclear Medicine
> > Chang Gang Memorial Hospital
> > Linko,Taiwan
> >
>
>
>
Received on Sun Jan 26 2014 - 15:31:15 CET

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