get population variance of given collection of numbers

Parameters

variance collection :block

Attributes

Returns

Examples

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

print variance arr          ; 1.25
print variance arr2         ; 1824.109375

variance.sample arr         ; => 1.666666666666667
variance.sample arr2        ; => 2084.696428571428

Related