OLS Slope Simple Regression

Problem

The ordinary least squares slope for one predictor is Sxy / Sxx summed over centered products and squares.

Given the predictor values and responses, return the slope.

Hint

Center both variables before forming the ratio.

case 1

in: [[1,2,3],[2,4,6]]

expected: 2

case 2

in: [[0,1],[1,0]]

expected: -1

case 3

in: [[1,2,3,4],[1,3,2,5]]

expected: 1.1

Starter codePython

def ols_slope_simple_regression(xs, ys):
    # Your code here
    pass

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