{"version":"1.0","type":"rich","title":"sleep vs concenration","description":"This grouped bar chart compares sleep patterns against concentration difficulty levels, showing the number of students for each combination. The data comes from a CSV file on student grades and mental health, loaded via `d3.csv`. The visualization uses `d3.rollups` to aggregate counts by two categorical dimensions, then renders the nested groups with `d3.scaleBand` for both axes and `d3.scaleLinear` for the y-axis. Colors are assigned using `d3.scaleOrdinal` with `d3.schemeTableau10`. SVG rectangles display the bars, with hover tooltips showing exact counts for each sleep and concentration category.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cb1eb676facd4442a6f91ce4be21733d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}