All the info you need about my analytics consulting work.
Est. 2025.

The goal of this calculator is to provide a super user-friendly tool for beginners to determine test size for pre/post diff-in-diff tests. But it turns out it's still useful even if you've done this a hundred times. I often find myself needing to explain this logic to others or needing to ballpark test size for a proposed test. This tool helps give a quick live demo using real numbers.

I played this game as a kid and still enjoy it whenever I find others who like this sort of game. When my 7yo got interested in playing, I realized it would be helpful to have a tool to visualize the game dynamics. So I made this web app that generates puzzles, solves them using ray-tracing, and visualizes the solutions. This allows us to play together or solo. Plus, it's designed for printing the pages to take on the go.

Note that the original "Black Box" game by Parker Brothers is not needed to play. You can just print this template and play with pencil and paper.