This scatter plot visualizes tips against total bills from the Tips dataset, with each point colored by the customer's gender (blue for male, magenta for female). The visualization uses D3 v5 with `d3.scaleLinear`, `d3.extent`, and `d3.axisLeft`/`d3.axisBottom` to render an SVG chart with labeled axes and gridlines. The code loads data asynchronously via `d3.csv` and applies a `.nice()` function to round the scale domains.