{"version":"1.0","type":"rich","title":"Activity6_Question1","description":"A bubble chart visualizes correlations between average horsepower, torque, and highway MPG across 31 car makes, with circle size encoding highway MPG and color representing car brand. The D3 v7 code loads CSV data, scales axes linearly, and positions bubbles via x/y coordinates. Hovering reveals tooltips showing the car make. A legend explains size and color mappings. The SVG renders with static circles, using D3's selection, scale, and axis methods.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/49076451be854dc4a38cf22b78647c81?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}