How to calculate the mean and standard deviation of the following matrix considering only the nonzero values of the matrix ?
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A=[2 3 5 16;0 8 7 0;19 4 6 0;14 0 0 9]
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Animesh
le 1 Juil 2023
Modifié(e) : Animesh
le 1 Juil 2023
In MATLAB, you can calculate the mean and standard deviation of the non-zero values in a matrix using the following steps:
Step 1: Extract the non-zero values from the matrix.
Step 2: Calculate the mean of the non-zero values.
Step 3: Calculate the standard deviation of the non-zero values.
Here's the MATLAB code to accomplish this:
A = [2 3 5 16; 0 8 7 0; 19 4 6 0; 14 0 0 9];
nonzero_values = A(A ~= 0); % Extract non-zero values from matrix A
mean_value = mean(nonzero_values); % Calculate the mean of non-zero values
std_value = std(nonzero_values); % Calculate the standard deviation of non-zero values
disp("Mean: " + mean_value);
disp("Standard Deviation: " + std_value);
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