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 Approximation and R-square(COD)		  New Topic  Reply to Topic
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MPM97

Russia
1 Posts
Posted - 04/20/2019 :  1:57:45 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 2018(64bit) b9.5.0.193
Operating System: Windows 10

The main problem is that i dont understand how correctly to do an approximation and which parameters to use for determination how definitely function chosen fits data. For example, Residual Sum of Squares, R-Square (COD), Adj. R-Square are. How use it?
I have read about them in Help Online, but i want to see a practical example. I did some approximations and i think that R-square is big for these results and i did something wrong. Maybe before I have to adjust some settings? Because i just choose default sigmoidal fit and make fitting. Just, i want to know when i have to use СOD and when others.
Thanks in advance.

Echo_Chu

China
Posts
Posted - 04/22/2019 :  02:51:32 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

Please look at the FAQ below for answering your question.

https://www.originlab.com/doc/Quick-Help/measure-fitresult


Echo
OriginLab Technical Service
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