Linear Regression, Data Science, Modeling, Ordinary Least Square, Regression.
10: solving for the best beta. Image by author. The algebra steps were omitted for brevity, but the last line shows the formula for getting beta coefficients for any OLS model — it’s that simple. Let’s walk through that calculation step by step… a = matmul(x.T, x) b = inv(a) c = matmul(b, x.T)