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 About the Scale Errors with Sqrt(Reduced Chi^2)

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T O P I C    R E V I E W
Mohaddeseh Abbasnejad Posted - 12/07/2011 : 10:31:57 AM
Origin Ver. 6.0 and Service Release (Select Help-->About Origin):
Operating System: Windows XP

Hello every one,

I have noticed that if the data include error bars, and some one selects the Scale Errors with Sqrt(Reduced Chi^2) check box as well, the final error in parameters decreases.
I wonder if it is right or not?
Should I select the Scale Errors with Sqrt(Reduced Chi^2) check box if my data have already error bars?

Thanks in advance.
Yours,
Mohaddeseh,
PhD candidate, JAIST, Japan
1   L A T E S T    R E P L I E S    (Newest First)
Sam Fang Posted - 12/07/2011 : 10:05:06 PM
You can see Fit Control: Use Reduced Chi-Sqr in Advanced table from the following page:
http://www.originlab.com/www/helponline/Origin/en/UserGuide/Settings_Tab_Upper_Panel.html

For the algorithm, see Parameter Standard Errors in the following page:
http://www.originlab.com/www/helponline/Origin/en/UserGuide/The_Fit_Results.html

Sam
OriginLab Technical Services

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