This example shows a bar chart of the average count of data points per US state, sorted in descending order. The chart is rendered with SVG using D3 v7, featuring axis labels, a toggleable filters panel, and responsive resizing. Data is loaded from a remote CSV file via `d3.csv` and processed with `d3.group` and `d3.mean` to compute state averages. The `viz.js` module draws the chart using `d3.scaleBand`, `d3.scaleLinear`, `d3.axisLeft`, and `d3.axisBottom`.