i want to know the fitness

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?

[Jeffrey Clark]

@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.

[민준 배]

i need to know that how similar and different the x and y axes are.

what can i do?

Answer 1

[Jonas]

i guess you are seraching for the correlation of X and Y coordinates

see corr() and corrplot()