Circular mean function

[JeffBelgum]

Create a function that returns the mean of circular values. Care should be taken to account for wrapping values and the function should handle both degrees and radians.

[justin-uy]

Does this function look like a reasonable model?
https://github.com/jhamrick/python-course/blob/master/week4/stats/circ.py#L39

[JeffBelgum]

That looks good, the link it references also looks good http://www.jstatsoft.org/v31/i10

And here are a few test cases you might use:

1. [15, 355] -> 4.99999999999 (Degrees)
2. [pi/4, -pi/4] -> 0 (Radians)
3. [pi/3, 2*pi-pi/6] -> 0.261799387799 (Radians)