Random Walk Variance After Steps

Problem

For a random walk with independent increments of variance sigma^2, the position after n steps has variance n sigma^2.

Given the increment variance and n, return the variance.

Hint

Independent increments add their variances.

case 1

in: [1,100]

expected: 100

case 2

in: [4,25]

expected: 100

case 3

in: [0.5,8]

expected: 4

Starter codePython

def random_walk_variance_after_steps(step_variance, n):
    # Your code here
    pass

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