All Datasets

All datasets are listed below, and can be filtered by statistical method on the right. A downloadable spreadsheet of all datasets is also available for more advanced searches.

AnAge Longevity Database

The AnAge database includes information on the longevity of thousands of animal species, allowing studies of the factors related to long lifespans.

Bird genetic diversity

Evolutionary theory suggests that species spread over a wider geographic range should have greater genetic diversity. Does this hold true in birds? An observational study of 387 bird species.

Bloodletting

Bloodletting—deliberately withdrawing large amounts of blood from patients—was a common medical practice for centuries, until evidence was finally collected on its efficacy. Use an early observational dataset to explore its use for pneumonia.

Gordon Weinberg

Core temperature during surgery

Is low core temperature during surgery associated with poor surgical outcomes or death? Use logistic and survival analysis to study an observational dataset.

Dry beans

Sort and classify beans using features extracted from images.

Elite college admissions

We know that students at elite universities tend to be from high-income families, and that graduates are more likely to end up in high-status or high-income jobs. But very little public data has been available on university admissions practices. This dataset, collected by Opportunity Insights, gives extensive detail on college application and admission rates for 139 colleges and universities across the United States, including data on the incomes of students. How do admissions practices vary by institution, and are wealthy students overrepresented?

Jessica Zhiyu Guo

European protected ham

In Europe, some types of ham—like Black Forest ham—can only be legally produced in specific geographic regions. Does the size of those regions affect the price of the ham?

Fiscally standardized cities

Extensive financial data on over 200 of the largest cities in the United States for over 40 years. Which cities spend the most or the least on government services?

Galaxy mass prediction

Galaxies span a range of masses. Can students learn a statistical model that associates a galaxy’s mass with its brightness as measured at six wavelengths along with an estimate of its distance from the Earth?

Health exams in Vietnam

As access to health care increases, public health advocates encourage ordinary people to get regular check-ups to detect problems before they become serious (and expensive). But not everyone follows this advice. This survey of people in Vietnam explores the factors leading people to get regular check-ups.

House prices in Ames, Iowa

Records of homes sold in Ames, Iowa, and their sale prices, including detailed covariates that could be used to predict home prices.

Insect attraction to light

What kinds of lights are insects most attracted to? Analyze the results of a factorial experiment using light traps.

Makeup and male attractiveness

Makeup is often used by women, but does makeup make men more attractive? This study had participants rate photos of men with and without makeup on.

Mapping Police Violence

Each year in the United States, around 1,000 people are killed by police. Some of these deaths are accidental, in traffic accidents and other incidents; some are deliberate killings considered legally justified by authorities; and others are considered unjustified or even lead to the prosecution of the police officer. Explore data on over 10,000 such killings to identify patterns in the people killed, the stated reasons for their killings, and the situations leading to their deaths.

Jessica Zhiyu Guo

Nightly sleep time and GPA in first-years

Does nightly sleep duration predict change in end-of-semester grade point average (GPA)? First-year college students from three independent universities provided sleep actigraphy for a month early in their spring academic term across five studies.

RTG tinned fish

The Rainbow Tomatoes Garden sells hundreds of kinds of canned seafood, and produces a complete table including 27 different attributes, from Latin name to sodium content. Write code to clean the data, then analyze factors affecting price and composition.

Shunyi (Jess) Zheng

Rail trails and property values

Rail trails are a great recreation opportunity, but do homes near them rise in value? A retrospective observational study of house values.

Religion and analytic thinking

A controversial study found that encouraging analytic thinking also reduced religious belief. A replication attempt collected much more data to try to confirm the hypothesis; is it supported by the data? A simple randomized experiment with continuous outcome and demographic controls.

Resenting moral rebels

We usually applaud people who rebel against the status quo for moral reasons – but those involved in the status quo do not. An experiment attempts to understand why this is.

Science Forums

A random sample of discussions at a large science discussion forum, with metadata about each.

Serving sizes and plate sizes

Do people eat more food if their meals are served on larger plates? A randomized experiment with demographic and psychological control variables.

Spider nuptial gifts and fraud

Male spiders give “gifts” of silk-wrapped food to female spiders to convince them to mate. Sometimes, they may cheat by gifting something other than food. Under what conditions do they cheat, and how much silk do they use to wrap fake gifts? Analyze an experiment on spiders in the lab.

Sugary drinks and portion limits

Public health officials are interested in policies that would reduce consumption of sugary drinks. What policies work and what policies backfire? A factorial experiment.

Testosterone and diversity

When students work on group projects, they work better when their groups are diverse. This study asked if that depends on the testosterone level of the group, and if high-testosterone groups benefit less from diversity.

Traffic stops in Connecticut

Records for every traffic stop made by the Connecticut State Police over several years, including the reason for the stop and demographic details. Use classifiers to study whether stop and search decisions show signs of bias.

US College Scorecard

An extensive survey of American colleges and universities, recording the demographics of their graduates, typical salaries, and much more.

World Development Indicators

The World Bank’s World Development Indicators (WDI) compile development information about countries around the world. Using ten years of data, study development, political stability, pollution, and other factors at the national and regional levels.