Nested loops for double summation
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回答（1 个）
Akira Agata
2020-3-15
How about the following?
% Example of 3-by-3 array n
n = rand(3);
% Calculate R, C, and T
R = sum(n,2);
C = sum(n);
T = sum(R);
% Calculate \chi^2
CR = (C'*R')';
S = ((n - CR/T).^2)./(CR/T);
chi2 = sum(S(:));
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