Function var_all_weighted 

pub fn var_all_weighted<T, W>(
    input: &Array<T>,
    weights: &Array<W>,
) -> (f64, f64)
where
    T: HasAfEnum,
    W: HasAfEnum + RealFloating,

Compute weighted variance of all data

Parameters

• input is the input Array
• weights Array has the weights

Return Values

A tuple of 64-bit floating point values with the stat values.