Turtle and Observer Command
variance-of-turtles `[list of commands]` Returns the variance of [list of commands] amongst all the turtles. Note: If `[list of commands]` contains no numbers, an error occurs. If some of the `[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-turtles [speed] returns the variance of the speed of all the turtles. Related commands: variance-of-list variance-of-patches