This example presents two linked charts that analyze student performance data loaded from a CSV file hosted in a GitHub Gist. A multi-series line chart compares subject scores, team scores (scaled by a factor of ten), and average scores across student IDs, using D3’s scaleLinear, axis, and line APIs. A second combined chart overlays bars and lines to show average scores grouped by team score. Both visualizations include legends, labels, gridlines, and an annotation highlighting the largest divergence between subject and average scores.