Cochran C Statistic

Problem

Cochran's C tests homogeneity of variance by dividing the largest group variance by the sum of variances.

Given the list of group variances, return the C statistic.

Hint

The maximum variance is compared against the total.

case 1

in: [[1,1,1]]

expected: 0.3333333333333333

case 2

in: [[4,1,1]]

expected: 0.6666666666666666

case 3

in: [[2,3,5]]

expected: 0.5

Starter codePython

def cochran_c_statistic(variances):
    # Your code here
    pass

3 test cases · run your code against them in the editor