variance-of-frogs-with [1st list of commands] [2nd list
of commands]
Returns the variance of the [2nd list of commands] when
evaluated across all the turtles of breed frogs that satisfy the conditions
(must return a boolean of true or false) specified by the [1st list
of commands] .
Note: If [2nd list of commands] contains no numbers, an
error occurs. If some of the [2nd list of commands] , when
evaluated, are not numbers, those values are ignored.
Note: When a turtle calls the command, it is not included as part of
the calculation.
Examples:
variance-of-frogs-with [color = red] [speed] returns the
variance of the speed of all the red turtles of breed frogs.
Related commands:
variance-of-list variance-of-patches
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