This example shows a bar chart of the mean sepal length for each Iris species, highlighting differences among setosa, versicolor, and virginica. It loads the Iris dataset from a CSV file into a Dask dataframe, groups by species, and computes the mean of the sepal_length column. The resulting values are plotted using seaborn’s `barplot` and displayed with matplotlib’s `pyplot`, which sets the title, axis labels, and shows the figure.