This example demonstrates how to transform the Iris Dataset using D3’s data analysis functions. It loads a CSV file and extracts summary statistics, computing averages per species with `d3.flatRollup` and creating histograms of sepal lengths with `d3.bin`. Results are displayed as raw JSON in a `<pre>` element, updating via a state-driven render cycle. The visualization uses D3 v7 and highlights practical data wrangling techniques for exploratory analysis.