Exponential MLE Rate

Problem

The maximum likelihood estimate of the exponential rate is n / sum(x_i), the reciprocal of the sample mean.

Given the sample values (all positive), return the rate estimate.

Hint

Invert the sample mean.

case 1

in: [[1,3]]

expected: 0.5

case 2

in: [[2,2]]

expected: 0.5

case 3

in: [[0.5,1,1.5]]

expected: 1

Starter codePython

def exponential_mle_rate(values):
    # Your code here
    pass

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