Bayesian CUPED & Sensitivity Analysis

Motivated by the great blog post by Understanding CUPED by Matteo Courthoud , we explore a Bayesian approach to CUPED to understand its sensitivity with respect to the covariance parameter \(\theta\) of the pre-post mean model. I will assume that the reader is already familiar with CUPED and has read Matteo’s blog post (highly recommended!). Here we focus on the sensitivity component. We do not do…