I&#x27;m surprised no one on the team was familiar with multivariate analysis. That&#x27;s the wrong way to say it. Let me rephrase more carefully...<p>I&#x27;m surprised no one used more sophisticated analysis techniques to allow an experiment that changes many explanatory factors simultaneously and estimates the effects of not only each factor independently but also their interactions. It&#x27;s relatively straightforward statistics and would have been taught to clever undergrads or first-year grad students who specialized in math, economics, machine learning, industrial engineering, etc.