get population skewness of given collection of numbers

Parameters

skewness collection :block

Attributes

Returns

Examples

copy
arr:  [1 2 3 4]
arr2: [3 120 4 7 87 2 6 34]

print skewness arr          ; 0.0
print skewness arr2         ; 1.127950016816592

skewness.sample arr         ; => 0.0
skewness.sample arr2        ; => 1.40680083744453

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