find probability of chi2 test
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Dear all;
if i want to perfrom a hypothesis test for chi2 distrubtion , how can i do it in matlab :
P(X>a)= alpha
5 Comments
Asvin Kumar
on 21 Mar 2021
Thanks for explaining. I'm, unfortunately, not the right person for this question. I was merely suggesting a function I had come across in the docs. I'll let someone else from the community help you with this.
Accepted Answer
Ive J
on 21 Mar 2021
Based on what you explained it seems you already have the X2 stat.
p = 1 - chi2cdf(x, nu) % where x is chi2 stat and nu is df
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More Answers (1)
Aditya Patil
on 29 Mar 2021
You have X. using chi2cdf, you can get
. So in your case,
, which you can get using chi2cdf as follows
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/566116/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/566121/image.png)
p = 1 - chi2cdf(X, a)
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