RD Bandwidth Rule

Problem

Compute a rule-of-thumb regression discontinuity bandwidth: 1.06 * std * n^(-1/5) using the population standard deviation.

Empty input returns 0.0.

Hint

This plug-in rule shrinks the bandwidth as the sample grows.

case 1

in: [[1,2,3,4]]

expected: 0.8981499984950554

case 2

in: [[5,5,5]]

expected: 0

case 3

in: [[0]]

expected: 0

case 4

in: [[]]

expected: 0

Starter codePython

def bandwidth_rule(values):
    # Your code here
    pass

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