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fact >> Statistics > std

std

calculates the standard deviation of each column of x

Calling sequence

std_x = std(x,(nbr));

Arguments

x:

a matrix (n x q)

(nbr):

any character; if present, the calculation is processed with n instead of (n-1) the default value

std_x:

a vector (1 x p) containing the standard deviations of the columns of x

Examples

[std_x]=std(x)

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