Mediation Effect Product

Problem

Compute the indirect (mediation) effect as the product of the path coefficients a (treatment to mediator) and b (mediator to outcome).

Hint

The indirect effect flows from treatment through the mediator to the outcome.

case 1

in: [0.5,0.8]

expected: 0.4

case 2

in: [2,-0.5]

expected: -1

case 3

in: [0,3]

expected: 0

case 4

in: [1.5,1.5]

expected: 2.25

Starter codePython

def mediation_effect(a, b):
    # Your code here
    pass

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