{"version":"1.0","type":"rich","title":"Activity6-Question4","description":"This bubble chart visualizes the relationship between healthcare spending (USD) and life expectancy across several countries from 1970 to 1974. Each bubble represents a country-year observation, with bubble size encoding the year and color distinguishing countries. Hovering over a bubble reveals a tooltip with exact values. The chart uses d3.v7's scaleLinear for axes and bubble sizing, scaleOrdinal for coloring, and SVG circles with transition-based tooltip interactions. Data is loaded from a local CSV file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/887c79af45124418b023249fa96368fb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}