i want to know the fitness
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![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1213748/image.png)
the dot is my data and the red line is y=x graph
I want to know the fit between my data and the red graph.
which function do i have to use?
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Jeffrey Clark
2022-12-1
@민준 배, please look at this example and consider using polyfit - Search - Help Center - MATLAB & Simulink (mathworks.com) to ge a better line and see its fit in polyval return of the standard error.
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另请参阅
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