how to calculate the mean using loop

i want to calculate the mean value in 2*2 size by creating a loop

A = [1 2; 3 4];    % Matrix A
B = [2 3; 5 6];    % Matrix B
C = [A, B];        % Concatenated matrix C

meanC = 0;         % Initialize mean variable
count = 0;        % Initialize count variable
Iterate over the 2x2 submatrix of C
for i = 1:2
    for j = 1:2
        meanC = meanC + C(i, j);   % Accumulate the sum
        count = count + 1;        % Increment the count
    end
end
meanC = meanC / count;    % Calculate the mean

disp(['Mean of C (2x2):', num2str(meanC)]);

when i am using this code it not giving 2*2 sized mean output

[Walter Roberson]

Your code is building a 2 x 4 matrix and totalling all of the entries in that 2 x 4 matrix.

If you are wanting a 2 x 2 output, that suggests that you want the mean of A(1,1) with B(1,1), and A(1,2) with B(1,2) and so on. Which would be just (A+B)/2 ... unless you are expected build a function that takes an indefinite number of matrix inputs.

[Jincy]

Thank you

Answer 1

[Sulaymon Eshkabilov]

If I understood your question correctly, here is how it can be done:

A = [1 2; 3 4];    % Matrix A
B = [2 3; 5 6];    % Matrix B
meanC = 0;         % Initialize mean variable
count = 2;         % Initialize count variable
%Iterate over the 2x2 submatrix of C
for i = 1:2
    for j = 1:2
        meanC(i,j) = A(i, j)+B(i,j);   % Accumulate the sum
    end
end
meanC = meanC / count;    % Calculate the mean

fprintf('Mean of C (2x2): \n')

Mean of C (2x2): 

disp(reshape(meanC, 2,2));

    1.5000    2.5000
    4.0000    5.0000

% Validate
Cmean = (A+B)/2

Cmean = 2×2

1.5000 2.5000 4.0000 5.0000

[Jincy]

Thanku you