std( ) command or function gives the standard deviation value of vector or matrix or array elements, after reading this MATLAB standard deviation topic, you will know the theory and examples.
Syntax:
std(n)
- n can be a vector or matrix.
Example: To create a vector and find the standard deviation of all elements of a vector.
% create a vector n n=[1,2,2,10,5,78] std(n)
Output:
n = 1 2 2 10 5 78 ans = 30.3886
Example: To create a matrix and find a standard deviation value of each column of the matrix.
% create the 3x3 matrix as n=[1,2,3;1,2,23;4,5,21] std(n)
Output:
n = 1 2 3 1 2 23 4 5 21 ans = 1.7321 1.7321 11.0151
Explanation:
- 1.7321, 1.7321 and 11.0151 are the standard deviation value of the first, second and third column of the matrix respectively.
