Re: Fitting with leasqr and uncertainties

[st.michal88]

I see now. This is really interesting. Furthermore I know now why my method
is consistent with Origin's result.

http://originlab.com/www/helponline/Origin/en/UserGuide/The_Fit_Results.html

"The square root of a main diagonal value of this matrix is the *Standard
Error* of the corresponding parameter"

I do not need that sofiscicated methods as you proposed so I will stay with
square root of diagonal elements. Thank you very much for your help!


2014/1/20 Olaf Till-2 [via Octave] <
address@hidden>

> On Mon, Jan 20, 2014 at 07:13:00AM -0800, st.michal88 wrote:
> > Thank you, this is very helpful. Can you tell me more about "principal
> > component analysis"? What is it all about? I am not a specialist in
> > statistics.
> >
> > PS. I didn't realize that establishing error of fitting parameters can
> be
> > such a complicated issue.
>
> But it is, you need to be aware of the possible inapplicability of the
> assumptions of each used method, and so need some insight.
>
> As for your question, it is nice that you seem to be willing to study
> the problem more deeply, but I'd like to refer you to other sources of
> information, e.g. Wikipedia.
>
> Olaf
>
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