This interactive scatter plot explores the Medical Cost Personal Dataset, showing relationships between patient attributes like age, BMI, and children. Users select which attribute maps to the x- and y-axes via two ReactDropdown menus, with smoker status encoded by the color of each circle. Built with React and D3 v5, the visualization uses scaleLinear for axes, scaleOrdinal for colors, and custom SVG components for axis ticks and marks, loading data via d3.csv.