This example shows grouped bar charts of admission counts by department and gender, with male and female bars side by side for each department. The chart uses a steelblue style and compares counts across six academic departments. The code employs D3.js v4 to load CSV data, process it with `d3.rollups`, and render with `d3.scaleBand` and `d3.scaleLinear`. It generates SVG output, uses `d3.axisBottom` and `d3.axisLeft` for axes, and manually positions bars with a 40-pixel width for each gender.