This chart displays the average salary for different job titles, using bars with distinct colors and a legend to identify each category. Hovering over a bar reveals a tooltip with the exact job title and salary amount. The visualization is built with D3.js v7, using `d3.csv` to load data, `d3.rollup` and `d3.mean` for aggregation, `d3.scaleBand` and `d3.scaleLinear` for axes, and interactive mouseover events to control tooltip opacity. The SVG render includes rotated x-axis labels and a custom legend.