The http://en.wikipedia.org/wiki/skewnessskewness is a measure of how asymmetrical the data is
distributed. Skewness indicates the assymetry of the distribution. A
positive skew indicates that the tail to the right is longer, and a
negative skew that the tail to the left is longer.
[width=, trim=0 100 0 0, clip=true]rattle-audit-explore-skewness
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