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