{"version":"1.0","type":"rich","title":"Mobility Rate Bubble Chart","description":"This bubble chart shows the relationship between median parent household income and mobility rate for California universities, with bubble size representing average students per cohort and color indicating trend in parents from the bottom income quintile. The visualization uses D3 v5 with SVG rendering, d3.scaleSqrt for bubble sizing, d3.scaleDiverging with the Spectral interpolator for color encoding, and d3-legend for legends. Data comes from Opportunity Insights' Mobility Report Cards dataset, filtered to California institutions and sorted by cohort count for proper layering.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/10633d32226a47aebb70a0377378e599?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}