Standard deviation of a 1D array for a particular range

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I would like to compute the standard deviation of my 1D array only for a particular range of indices.
my_array = [1 2 3 4 5 6 7 8 9 10];
i need to find Standard deviation for the elements of index 3 to 5 and 8 to 9.
i.e standard deviation of 3,4,5,8,9

Accepted Answer

Walter Roberson
Walter Roberson on 2 Jan 2021
std(my_array([3:5,8:9]))

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