This bubble chart visualizes the relationship between salary and employee residence place, with bubble size representing population and color indicating job title. It is rendered as an SVG using D3 v7, employing `d3.scaleLinear` for axes, `d3.scaleSqrt` for radius encoding, and `d3.scaleOrdinal` with `d3.schemeCategory10` for categorical coloring. The chart includes interactive tooltips on circle hover, axis labels, and a categorical legend. Data comes from merged JSON containing salary, population, and job title information.