Skip to content

Data Card: Palmer Penguins

This Data Card follows the structure of the Data Cards convention (Pushkarna et al., 2022), an emerging, people-centered approach to dataset documentation for responsible AI.

Dataset Summary

Item Description
Dataset Palmer Penguins
Curated dataset penguins
Observations 344 penguins
Species Adelie, Chinstrap, Gentoo
Location Palmer Archipelago, Antarctica
Islands Biscoe, Dream, Torgersen
Study period 2007-2009
Grain one penguin

Purpose

The Palmer Penguins dataset provides measurements and descriptive attributes for penguins observed in the Palmer Archipelago. The curated dataset was designed as an accessible dataset for data exploration and visualization and is commonly used as an alternative to the Iris dataset.

Provenance

The underlying observations were collected by Dr. Kristen Gorman and the Palmer Station Long Term Ecological Research program. The palmerpenguins project made curated versions of the data readily available for teaching, exploration, and analysis.

Sources

The dataset is available via CSV or through Seaborn's penguins dataset interface.

Dataset Composition

The dataset contains observations representing individual penguins. There are seven variables available.

  • species
  • island
  • bill_length_mm
  • bill_depth_mm
  • flipper_length_mm
  • body_mass_g
  • sex

The dataset includes three penguin species:

  • Adelie
  • Chinstrap
  • Gentoo

Possible Explorations

Reasonable analytical questions include:

  • predicting penguin species
  • predicting body mass from multiple morphological measurements
  • predicting one morphological measurement from other measurement(s)
  • comparing measurements across species
  • examining differences among islands
  • studying relationships among bill dimensions, flipper length, and body mass

Those are separate analytical experiments and should have their own declared assumptions, selected features, evaluation methods, and conclusions.

Limitations

The dataset is small and represents penguins observed in a specific geographic region and study period.

Results should therefore not automatically be generalized to:

  • all penguin species
  • all geographic populations
  • different ecological conditions
  • future populations
  • other biological species

Measurements also contain missing values, and some variables may be associated with species, sex, island, or other biological structure.

Representation Considerations

The dataset contains observations from three species and three islands, and those groups are not necessarily represented equally. Model performance calculated across the complete held-out sample may therefore hide differences in performance across species, sex, or island.

References

◄ Back to Home