Function kirstine::chi_squared

pub fn chi_squared(data: &Vec<(f64, f64)>) -> f64

Chi-squared test

Takes a vector of tuples with expected as first item, and observed as second.

Wikipedia article.

Example

let data = vec![
    (25.0, 23.0),
    (16.0, 20.0),
    (4.0, 3.0),
    (24.0, 24.0),
    (8.0, 10.0),
];
assert_eq!(kirstine::chi_squared(&data), 1.91);