This scatter plot visualizes the relationship between customer age and total transaction amount, using point color to distinguish existing customers from attrited customers. It loads bank customer data from a CSV file and renders circles as SVG elements, with black representing existing customers and red representing attrited customers. The visualization uses D3 v6’s `d3.csv` for data loading, `d3.scaleLinear` for both axes, and `d3.axisLeft` and `d3.axisBottom` to display the scales. The chart includes labeled axes for age and total expenditure, with semi-transparent points to reveal overlapping data density.