Mediation Indirect Effect

Problem

Return the indirect (mediated) effect a*b, the product of the treatment-to-mediator and mediator-to-outcome path coefficients.

Hint

The indirect effect is the product of the two path coefficients.

case 1

in: [0.5,0.4]

expected: 0.2

case 2

in: [0,0.4]

expected: 0

case 3

in: [-0.5,0.4]

expected: -0.2

case 4

in: [2,3]

expected: 6

Starter codePython

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

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