A bubble chart visualizes the correlation between movie rating ranges across six genres, plotting the percentage of ratings in the 5.0–6.5 range on the x-axis against the 7.5–8.5 range on the y-axis. Bubble size encodes the intermediate 6.5–7.5 rating percentage, while distinct colors identify each genre. The D3 v7 code uses `scaleLinear` for axes and sizing, `scaleOrdinal` for coloring, and includes interactive hover tooltips alongside axis labels and percentage-formatted ticks.