Difference-in-Differences

Problem

Compute the difference-in-differences estimate: (treat_post - treat_pre) - (control_post - control_pre).

Hint

DiD subtracts the control group's change from the treatment group's change.

case 1

in: [10,15,12,14]

expected: 3

case 2

in: [20,30,18,22]

expected: 6

case 3

in: [5,4,9,10]

expected: -2

Starter codePython

def difference_in_differences(treat_pre, treat_post, control_pre, control_post):
    # Your code here
    pass

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