Residual Skewness

Problem

Compute the population skewness of residuals: mean(((r - mean) / std)^3) using the population standard deviation.

Return 0.0 when the variance is 0 or input is empty.

Hint

Symmetric residuals have near-zero skewness.

case 1

in: [[1,2,3,4,5]]

expected: 0

case 2

in: [[1,1,1,5]]

expected: 1.1547005383792517

case 3

in: [[5,5,5,1]]

expected: -1.1547005383792517

case 4

in: [[2,2,2]]

expected: 0

Starter codePython

def residual_skewness(residuals):
    # Your code here
    pass

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