Mean Absolute Change

Problem

Given a numeric series, compute the mean absolute change between consecutive observations: the mean of abs(x[t] - x[t-1]).

Return 0.0 if the series contains fewer than two observations.

Hint

Average the absolute step sizes, not the signed changes.

case 1

in: [[1,3,6,10]]

expected: 3

case 2

in: [[5,5,5]]

expected: 0

case 3

in: [[10,7,9]]

expected: 2.5

case 4

in: [[4]]

expected: 0

Starter codePython

def mean_absolute_change(series):
    # Your code here
    pass

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