Exercise

Unadjusted Priors

Now let's specify a model that doesn't use adjusted scales for prior distributions, so that we alter rstanarm default behavior. This will allow us to have more direct control over the information going into the estimation. The songs data is already loaded.

Instructions

100 XP

Predict popularity from song_age
Tell rstanarm not to autoscale the parameters
Print a prior summary to confirm there was no adjustment