Scatter Plot
A scatter plot displays the population of the top 10 most populous countries, using circles positioned along a horizontal linear scale and a vertical band scale. Each circle’s radius matches half the band height, visually encoding population magnitude. The visualization uses D3 v5’s `csv`, `scaleLinear`, `scaleBand`, `axisBottom`, and `axisLeft` APIs, with SVG rendering. Data originates from the 2018 United Nations World Population Prospects estimate, loaded from `data.csv` and formatted with tick labels that abbreviate large numbers.