** Standard deviation. **

** For vectors, STD(x) returns the standard deviation. **

** For matrices, STD(X) is a row vector containing the **

** standard deviation of each column. **

** **

** **

** STD computes the "sample" standard deviation, that **

** is, it is normalized by N-1, where N is the sequence **

** length. **

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** **

** See also COV , MEAN , MEDIAN . **

** **