![chi-square.jfif](https://www.mathworks.com/matlabcentral/answers/uploaded_files/207515/chi-square.jpeg)
Chi square on a custom equation plot
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Hello!
sorry if this may seem like a silly question, but I am having trouble with finding th chi^2 and reduced chi^2 values for my efficiency plot. I generated a code of my plot which i did on the curve fitting app, and I'm not sure how to go about writing in the chi^2 for it. My plot looks like this
![x.jpg](https://www.mathworks.com/matlabcentral/answers/uploaded_files/205969/image.jpeg)
Thank you!
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Answers (1)
Abhishek Singh
on 8 Mar 2019
I’m not very clear about the question you asked but I understand you need to find Chi-square value and reduced Chi-square value.
Formula for finding the Chi-square value is:
![chi-square.jfif](https://www.mathworks.com/matlabcentral/answers/uploaded_files/207515/chi-square.jpeg)
h = chi2gof(x)
You can find reduced Chi-square value through dividing the Chi-square value by degrees of freedom.
I hope this helps.
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