Get startedGet started for free

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.

This exercise is part of the course

Bayesian Regression Modeling with rstanarm

View Course

Exercise instructions

  • Calculate the adjusted scale of the intercept.
  • Calculate the adjusted scale of the song_age.
  • What would be the adjusted scale of valence if it were in the model?

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# 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$___)) * sd(songs$___)
Edit and Run Code