This scatter plot visualizes the Iris dataset, mapping each flower’s course ID to its percentage score, with points colored by species (setosa, versicolor, or virginica). Built with D3 v6, it uses `d3.csv` to load data, `d3.scaleLinear` for the x- and y-axes, and `d3.axisLeft` and `d3.axisBottom` for the chart’s ticks. Circles are rendered as SVG elements via `d3.selectAll` and `join`, with a fixed radius but dynamic fill colors assigned by a custom marker function. The dataset is sourced from a remote CSV file hosted on GitHub.