Data Science, Causal Inference, Linear Regression, Getting Started, Ab Testing.
% (df.time_spent_mins.var())) print('Residual variance after accounting for complexity: %.2f' \ % (time_model.resid.var())) # Output: # Initial variance: 16.63 # Residual variance after accounting for complexity: 5.94 So, we can see that adding a factor that can predict the outcome variable to a