All Forums  Origin Forum  Origin Forum  Negative R-Square (COD) and neg. Adj. R-Square

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by DaKrippo[/i] [br]Origin Ver. and Service Release (Select Help-->About Origin): 8 Operating System:WinXP While fitting some data by means of a nonlinear Curve Fit (see image) it happened to me that the values of R-Square (COD) and Adj. R-Square became negative. Interestingly the R Value is said to be zero. Could this be true or is this some kind of bug? If these values are correct, what do they mean or how can I interpret them? Is there really an advantage in considering the adj. R-Square instead of the normal one when comparing the goodness of a fit? THX for the help, Dan [img]http://www.originlab.com/ftp/forum_and_kbase/Images/FitCurve.jpg[/img] [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.