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Re: chi-squared of poly_fit and polyfitw results [message #34933 is a reply to message #34924]

Fri, 02 May 2003 04:41

Sergey Koposov
Messages: 7
Registered: April 2003

Junior Member

Hello Chris,
In principle, chi-square is not directly related with sigma.

The function poly_fit have the keyword
CHISQ=variable, which allow to put the chi-square value of fit into the
variable.

You want the chi-squared value of parameters , or of fit?

Cheers,
Sergey

Chris Boshuizen wrote:
> Hi group,
>
> I was wondering how I relate the sigma values from these routines to a
> chi-squared value. Is it a simple statistical relation? I tried a google
> search and didn't find out how, so I hope someone can offer a suggestion.
> Thanks.
>
> Best regards,
> Chris Boshuizen
>
> To reply via email, replace 'newsgroup' with 'student'.
>
>

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[Message index]

		Re: chi-squared of poly_fit and polyfitw results By: Craig Markwardt on Fri, 02 May 2003 20:00
		Re: chi-squared of poly_fit and polyfitw results By: Sergey Koposov on Fri, 02 May 2003 04:41
		Re: chi-squared of poly_fit and polyfitw results By: Chris Boshuizen on Sun, 04 May 2003 18:26

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