Standard deviation, MATLAB in Mathematics

Standard Deviation

The standard deviation is the square root of variance:

683_standard deviation.png

The built-in function in a MATLAB for the standard deviation is known as std; the standard deviation can be found either as the sqrt of the variance, or by using std:

>> shortx = [2 5 1 4];

>> myvar = var(shortx)

myvar =

    3.3333

>> sqrt(myvar)

ans =

    1.8257

>> std(shortx)

ans =

    1.8257

Posted Date: 10/22/2012 7:00:45 AM | Location : United States







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