{"version":"1.0","type":"rich","title":"Question4_Bubble chart","description":"This bubble chart visualizes the correlation between GDP per capita, life expectancy, and population-area ratio for 20 countries. Each circle’s position maps GDP and life expectancy, while its radius encodes population density, with color distinguishing nations. Data is loaded via `d3.csv` from `bubblechart.csv`. The visualization uses `d3.scaleLinear` for axes and size, `d3.scaleOrdinal` with `d3.schemeCategory10` for colors, and SVG circles with interactive tooltips on mouseover. A legend identifies each country.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/978503a7d2354e66a0fe224e190e1b0c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}