![]() ![]() ![]() If X is a matrix, std(X) returns a row vector containing the standard deviation of the elements of each column of X. The result s is the square root of an unbiased estimator of the variance of the population from which X is drawn, as long as X consists of independent, identically distributed samples. Where X is a vector, returns the standard deviation using (1) above. ![]() The two forms of the equation differ only in versus in the divisor. There are two common textbook definitions for the standard deviation s of a data vector X.Īnd is the number of elements in the sample. Std (MATLAB Functions) MATLAB Function Reference ![]()
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