This scatterplot visualizes the average Body Mass Index (BMI) across age groups, using data from the CDC Dataset. The chart aggregates individual data points into age bins, with each bar representing the mean BMI for that age range, using D3's `bin` and `sum` functions. The visualization is rendered as an SVG, with axes generated via `axisLeft` and `axisBottom`, and custom styling applied through CSS to highlight the distribution of BMI values across the lifespan.