Function inc_stats::mean

pub fn mean<T, V, I>(data: I) -> Option<T> where
    T: Float + FromPrimitive + AddAssign,
    V: DerefCopy<Output = T>,
    I: IntoIterator<Item = V>, 

Get the mean of a set of data

This method takes constant space and linear time.

Examples:

let mean: f64 = inc_stats::mean(&[2.0, 4.0]).unwrap();
assert!((3.0 - mean).abs() < 1.0e-6);