{
    "action": "final",
    "content": "The summary statistics for all four numeric columns (150 specimens each, no missing values) come from the query result rendered above.\n\n**Sepal length** ranges from 4.3 to 7.9, a range of 3.6. The mean is 5.84 and the median is 5.8, so it is roughly symmetric. The standard deviation is 0.83 and the IQR is 1.3.\n\n**Sepal width** ranges from 2.0 to 4.4, a range of 2.4. The mean is 3.06 and the median is 3.0, which is also near symmetric. It has the tightest spread of the four, with a standard deviation of 0.44 and an IQR of 0.5.\n\n**Petal length** ranges from 1.0 to 6.9, a range of 5.9. The mean is 3.76 but the median is 4.35, so the mean sits well below the median. The standard deviation is 1.77 and the IQR is 3.5. This is the widest spread of the four.\n\n**Petal width** ranges from 0.1 to 2.5, a range of 2.4. The mean is 1.20 and the median is 1.3. The standard deviation is 0.76 and the IQR is 1.5, which is large relative to its scale.\n\n**Interpretation**\n- Sepal measurements are compact and unimodal-looking, with mean and median close together and small spreads relative to their values.\n- Petal measurements are much more dispersed. For petal length the IQR (3.5) is nearly 60% of its full range (5.9), and the mean is below the median. This pattern suggests a mixture of distinct groups (likely a cluster of very small petals alongside larger ones) rather than a single bell-shaped distribution. I did not run a per-species breakdown in this turn, so that explanation is an inference.\n- The large petal spread relative to the sepal spread suggests petal dimensions are the more informative features for separating species. This is worth confirming with a per-species breakdown, which is available in the `iris_by_species` gold table."
}