method number.variance
Contract
Return typedouble
No input parameters.
Parameter kindDefault valueType
Other unkeyed argumentsopt
Other keyed argumentsopt
Water Contract
<method number.variance
  _other_keyed=opt=wob=ekind.code="_add_to_environment"
  _other_unkeyed=opt=wob=ekind.code="_body"
  _return_type=number.double/>

Varince is a measure of the spread of a set of numbers. Variance is equal to the square of the standard_deviation of the same set of numbers. You can pass in numbers as _other_unkeyed or as _other_keyed as well as pass in one number as the subject.
number.<variance 1 2 3/>0.666666666666667
number.<variance _other_keyed=<thing x=1 y=2 z=3/>/>
0.666666666666667
number.<variance 1 2 3/>.<sqrt/>
number.<standard_deviation 1 2 3/>

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