{"version":"1.0","type":"rich","title":"final project","description":"A grouped bar chart displays the distribution of letter grades (A through F) across five self-reported stress levels, using counts from a CSV dataset of student grades and mental health. The visualization reveals how grade frequencies vary by stress category. The code uses D3 v7 with `d3.csv`, `d3.rollups`, and `d3.scaleBand` for the nested bar layout, plus SVG rendering for all marks and axes. An ordinal color scale maps grades to categories, with a legend provided.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/367c32c27db547a6b7556e9253e506f2?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}