?? kurtosis.m
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function retval = kurtosis (x) error(nargchk(1,2,nargin)) % check no. of input args [nr, nc] = size (x); x = x - ones (nr, 1) * mean (x); retval = zeros (1, nc); s = std (x); ind = find (s > 0); retval (ind) = sum (x (:, ind) .^ 4) ./ (nr * s (ind) .^ 4) - 3;return
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