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Hello there.
I am sorry I am confused with something I think it´s simple but I just can´t do.
How can you get the standard deviation and variance for a particular column and row of a given matrix? Do you have to use the function @stdev(x[,s]) or something like that? It doesn´t work to me. I am confused now.
Thanks a lot for the support.
Regards.

The only way to do it is to extract that particular column into a vector, and then find the standard deviation of the vector:

Ok. Thank you very much.