A scatterplot displays attack against defense for 51 fully evolved Gen 1–2 Pokémon, with each point colored by type and sized by HP. The visualization loads CSV data from a gist via `d3.csv`, converts numeric columns, and renders SVG marks using D3 v7’s `scaleLinear`, `d3.extent`, and `d3.mean` for axis scaling and summary statistics. The chart includes a summary panel showing data ranges and mean/median defense values.