| T O P I C R E V I E W |
| Paul84 |
Posted - 07/15/2006 : 10:43:58 AM
Origin 7.0
Operating System: Win XP
NLSF reports the reduced chi^2 value, not chi^2. How can I manage to find the common chi^2 value? For example, Origin give me the reduced khi^2= 1.17, while in the article I revised it pointed out 19,5 (20 degrees of freedom).
Thanks. |
| 3 L A T E S T R E P L I E S (Newest First) |
| Paul84 |
Posted - 07/15/2006 : 4:59:06 PM
Thank you again. |
| Mike Buess |
Posted - 07/15/2006 : 11:48:43 AM
These read-only NLSF properties are available...
nlsf.chisqr = reduced chi^2
nlsf.dof = degrees of freedom
nlsf.ssr = sum of squares ("common" chi^2)
They are related through the expression nlsf.chisqr = nlsf.ssr/nlsf.dof.
Mike Buess
Origin WebRing Member
Edited by - Mike Buess on 07/15/2006 11:51:06 AM |
| zachary_origin |
Posted - 07/15/2006 : 11:40:48 AM
You can take a look at this article.
http://www.originlab.com/www/support/resultstech.aspx?ID=710&language=English
What is the difference between Chi-Square and reduced Chi-Square?
Zachary
OriginLab GZ Office |
