Function rgsl::statistics::wkurtosis_m_sd

pub fn wkurtosis_m_sd(
    w: &[f64], 
    wstride: usize, 
    data: &[f64], 
    stride: usize, 
    n: usize, 
    wmean: f64, 
    wsd: f64
) -> f64

This function computes the weighted kurtosis of the dataset data using the given values of the weighted mean and weighted standard deviation, wmean and wsd.