Clustered Standard Errors in AB Tests

Using Causal Graphs to answer causal questions

How to Use Backdoor Criterion to Select Control Variables

Understanding Group Sequential Testing

Why Understanding the Data-Generation Process Is More Important Than the Data Itself

Understanding Instrumental Variables

Data Tells Us “What” and We Always Seek for “Why”

Double Machine Learning Simplified: Part 2 — Extensions & the CATE

Beyond Churn Prediction and Churn Uplift

Evaluating Uplift Models