{"version":"1.0","type":"rich","title":"Mobility Rate Bubble Chart","description":"This bubble chart displays the mobility rate of California universities, plotting median parent household income on the x-axis against the percentage of students from bottom-quintile families who reach the top quintile on the y-axis. Circle size encodes average cohort student count, while color represents the trend in parents from the bottom 20% income bracket. The implementation uses D3 v5's linear, sqrt, and diverging scales, alongside d3-legend for the color and size legends. Data originates from Opportunity Insights' Mobility Report Cards, filtered to California institutions. Averages are drawn using `d3.mean` and rendered as dashed lines.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/946a3efd2f5a44d5b13415e518ef60d4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}