The penguins’ four measures correlated two by two, over all penguins then within each species, where one relation changes sign; a heatmap clusters the measures by how alike they vary. On the Palmer penguins (palmerpenguins, CC0): 333 penguins of three species.
Gapminder’s famous bubbles: income against life expectancy in 2007, each continent’s life expectancy since 1952, and the countries that gained the most. On the Gapminder data: 142 countries, 1952-2007.
The baskets turned into one column per product: the combinations of the most bought products, and the strongest rules « who takes A also takes B ». Needs the statistics module. On a synthetic sales dataset: one invented shop, 2024-2025.
