![]() All the variance values are calculated for columns of matrix ‘a’. In the first use of the ‘var()’ command above, the variance of matrix ‘a’ is directly calculated. And there are four of uses ‘var()’ and ‘std()’ commands. In the command window of Matlab®, matrix ‘a’ and vector ‘b’ are created as you see above. ![]() How To Use ‘std()’ And ‘var()’ Commands In Matlab®? a = ![]() So, as a good engineer or mathematician, you can use computational methods to calculate them. For a lot of data, calculation of variance and standard deviations can be very troublesome with hand. As you see above, the formulas of variance and standard deviations are very basic.
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