Calculate Adjusted Scales
It's important to understand how rstanarm calculates adjusted scales for prior distributions, as priors can have a large impact on our estimates if not used in an appropriate manner. Calculate what the adjusted scales should be using the already loaded songs data.
Este ejercicio forma parte del curso
Bayesian Regression Modeling with rstanarm
Instrucciones del ejercicio
- Calculate the adjusted scale of the intercept.
- Calculate the adjusted scale of the
song_age. - What would be the adjusted scale of
valenceif it were in the model?
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
# Calculate the adjusted scale for the intercept
___ * sd(songs$___)
# Calculate the adjusted scale for `song_age`
(___ / sd(songs$___)) * sd(songs$___)
# Calculate the adjusted scale for `valence`
(___ / sd(songs$___)) * sd(songs$___)