Wald Statistic

Problem

Return the Wald statistic (theta_hat - theta0)^2 / se^2. Return 0.0 when se <= 0.

Hint

It is the squared standardized distance from the null value.

case 1

in: [1.5,0,0.5]

expected: 9

case 2

in: [10,8,1]

expected: 4

case 3

in: [0,0,1]

expected: 0

case 4

in: [2,1,2]

expected: 0.25

case 5

in: [1,0,0]

expected: 0

Starter codePython

def wald_statistic(theta_hat, theta0, se):
    # Your code here
    pass

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