comp.lang.idl-pvwave archive: archive » Re: Reduced chi-square goodness-of-fit statistic

Home » Public Forums » archive » Re: Reduced chi-square goodness-of-fit statistic

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Reduced chi-square goodness-of-fit statistic [message #65034 is a reply to message #65027]

Mon, 09 February 2009 14:35

pgrigis
Messages: 436
Registered: September 2007

Senior Member

giorgosioanno...@gmail.com wrote:
> But I don't really have to do anything with the errors. I hust give
> the data and the distribution, and IDL finds the parameters of the
> best curve fit and returns the reduced chisq.

In this case the absolute value of the reduced chi-square
is meaningless. You can still compare models (i.e. model
A "fits better" than model B if it has a lower chi-square in
the case of data with no error).

However, if your data is real world data, it will have
errors, and that is important information that you
should not neglect.

Ciao,
Paolo

Report message to a moderator

[Message index]

		Re: Reduced chi-square goodness-of-fit statistic By: David Fanning on Mon, 09 February 2009 18:31
		Re: Reduced chi-square goodness-of-fit statistic By: pgrigis on Mon, 09 February 2009 14:35
		Re: Reduced chi-square goodness-of-fit statistic By: lbusett@yahoo.it on Mon, 09 February 2009 09:06
		Re: Reduced chi-square goodness-of-fit statistic By: giorgosioannou84 on Mon, 09 February 2009 07:59
		Re: Reduced chi-square goodness-of-fit statistic By: pgrigis on Sun, 08 February 2009 16:45

Previous Topic:	Re: Cursor in Mac OS X 10.5.6 w/X11 2.2.3 and 2.3.2
Next Topic:	Re: How to get the center and radius for a x,y array

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 10:21:10 PDT 2025

Total time taken to generate the page: 1.36171 seconds