Turtle and Observer Command

sdev-of-turtles `[list of commands]`

Returns the standard deviation of the [list of commands] when evaluated across 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:

sdev-of-turtles [speed] returns the standard devation of the speed of all the turtles.

Related commands:
sdev-of-list sdev-of-patches