Datasets

moderndive bundles 58 datasets (the R moderndive + infer data, plus a few derived tables). Each loads with load_<name>() and returns a polars DataFrame.

import moderndive as md

md.available_datasets()          # sorted list of every dataset name
md.load_dataset("pennies")       # load by name (string)
md.load_pennies()                # or via the generated loader
shape: (800, 2)
yearage_in_2011
i64i64
198625
199615
199417
20083
199912
……
197536
198922
198130
199120
199318

By topic

Sampling & simulation

bowl, bowl_sample_1, bowl_samples, tactile_prop_red, almonds_bowl, almonds_sample, almonds_sample_100, pennies, pennies_sample, pennies_resamples, orig_pennies_sample

Hypothesis testing & CIs

mythbusters_yawn, movies_sample, spotify_by_genre, spotify_52_original, spotify_52_shuffled, spotify_metal_deephouse, offshore, age_at_marriage, zinc_tidy, cle_sac, gss

Regression

evals, saratoga_houses, house_prices, coffee_quality, coffee_ratings, credit, MA_schools, un_member_states_2024, mario_kart_auction, amazon_books, old_faithful_2024

Flights & weather (nycflights23 / 13)

flights, weather, airlines, airports, planes, envoy_flights, alaska_flights, early_january_weather, early_january_2023_weather

Other example data

gapminder, gapminder_2007, drinks, airline_safety, dem_score, us_births_1994_2003, steves_episodes, avocados, babies, ipf_lifts, ev_charging, DD_vs_SB, ma_traffic_2020_vs_2019, mass_traffic_2020

Tips

  • Every loader returns a polars DataFrame; call .to_pandas() if a function (e.g. statsmodels) expects pandas.

  • Datetime columns (e.g. time_hour in the weather/flights data) are stored in UTC.

  • load_dataset("<name>") raises a helpful ValueError listing valid names if the dataset doesn’t exist.