A bar chart displays the frequency distribution of values across numeric bins, with horizontal bars representing each group's frequency. The chart uses a linear x-axis for frequencies and a categorical y-axis for bin boundaries, with steelblue bars and labeled axes. Built with D3 v5, it employs `scaleLinear` for the x-axis and `scaleBand` for the y-axis, rendering SVG elements via `axisLeft`, `axisBottom`, and appended rectangles. Data comes from a local CSV file with columns for group boundaries and frequencies.