In our previous post, we introduced the Economics Team at Instacart and talked about our unique team structure and the various problems we work on. In a series of follow-up posts, we will take a closer look at how we deploy econometric and machine learning tools to tackle specific business problems. In the first post of this series, we will focus on regression discontinuity designs, a powerful econometric technique that can be used to learn causal effects from observational data. We also prov...