**Note on Bivariate Regression** — I’ve just updated and uploaded a note on bivariate regression from a sampling perspective (based on GOV 2000 material): Note on Bivariate Regression: Connecting Practice and Theory Read more

I'm the Engineering Manager for the Adaptive Experimentation group within Facebook's Core Data Science team. I hold a PhD in Political Science and an AM in Statistics from Harvard University.

## Blog

**Bootstrap Confidence Interval Methods in R** — This post briefly sketches out the types of bootstrapped confidence intervals commonly used, along with code in R for how to calculate them from scratch. Specifically, I focus on nonparametric confidence intervals. The post is structured around the list of... Read more

**Using ggplot2 to Plot Regression Coefficients with Confidence Intervals** — A graphical approach to displaying regression coefficients / effect sizes across multiple specifications can often be significantly more powerful and intuitive than presenting a regression table. Moreover, we can easily express uncertainty in the form of confidence intervals around our... Read more

**DAGs in R** — Following up on the previous post, another way to construct DAGs is using R. I think the igraph package is one of the customizable ways to do so. This is a powerful package designed for the visualization and analysis of... Read more