Plotting Model Uncertainty
Because we used a Bayesian estimation, we can use the posterior distributions to create a predicted regression line from each draw in our posterior samples. These lines will show the uncertainty around our overall line. The songs and stan_model objects are already loaded, along with the model_intercept and model_slope that you used in the last exercise.
Cet exercice fait partie du cours
Bayesian Regression Modeling with rstanarm
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Save the values from each draw of the posterior distribution
draws <- ___(stan_model, `___`, `___`)
# Print the `draws` data frame to the console
___