**The most important metric is `petal_length`.** The dataset has no sales- or revenue-style measure, so I judged importance by how well each measure separates the three species, which is the decision this dataset serves. **Why petal length** - Setosa's petal lengths run 1.0–1.9 (average 1.46). Versicolor's run 3.0–5.1 (average 4.26) and virginica's run 4.5–6.9 (average 5.55). Setosa is completely separated from the other two. - Versicolor and virginica overlap only in a narrow band, 4.5–5.1. Their medians are 4.35 and 5.55. - Sepal width separates the species poorly. Setosa's ranges 2.3–4.4, versicolor's 2.0–3.4 and virginica's 2.2–3.8, so they overlap heavily. - Petal width also tracks the species well (averages 0.25, 1.33 and 2.03). I picked petal length because its overall range is wider. I did not run a formal feature-importance test, so this ranking is a judgement from the per-species ranges. **Highest and lowest records by petal length** (the query result above shows the full rows) - **Highest:** a *virginica* specimen with petal length 6.9, petal width 2.3, sepal length 7.7 and sepal width 2.6. - **Lowest:** a *setosa* specimen with petal length 1.0, petal width 0.2, sepal length 4.6 and sepal width 3.6. The two extremes come from the two most distant species, which fits petal length being the dominant separating feature. The largest flower by petal length is about 7 times the smallest.