{"version":"1.0","type":"rich","title":"activity6_question4","description":"This bubble chart visualizes the relationship between marketing spend, revenue, and employee count for ten smartphone brands using a scatter plot with bubble size encoding employee numbers. The D3.js v7 implementation uses `d3.scaleLinear` for axes, `d3.scaleSqrt` for bubble radius, and `d3.scaleOrdinal` with the `d3.schemeSet3` color palette for brand differentiation. Interactive tooltips appear on hover, showing detailed metrics for each brand, while a legend identifies colors. Data is loaded from a CSV file using `d3.csv`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1c3d2bd578bd42cca174c3bc518ecc65?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}