Dear all
I have one serie with a mean greater than the median (so it is positively
skewed). Using the skewness coefficient:
skewness = ((N^2)/((N-1)*(N-2)))*(M3/S^3)
where N is the sample size, M3 is the centered third moment and S is the
standard deviation.
I get a negative value, how is it possible?
Cristina
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