Find Data for Analysis

Browse Interesting Data

• Data Is Plural - Weekly feed (with archive) of interesting datasets
• Tidy Tuesday - Weekly social data tidying and visualizing group with archive of picks
• Free Public Data Sets for Analysis - Compilation from Tableau, organized by topic
• Awesome Public Datasets - large but categorized list by topic and data type

Classic Small Data

• CORGIS: The Collection of Really Great, Interesting, Situated Dataset - Provides data in csv or json
• RDatasets - repository for datasets distributed with R and various R packages
• Generate Data.com - 30+ data types, 10+ data formats, even latitude/longitude and credit card data

Search Collections

• OpenML - Intended to provide training data for machine learning, with good metadata
• Kaggle Datasets - (registration required) user-contributed open data with preview or Competition Data
• Google Dataset Search - Google search optimized for datasets

Data with Suggested Data Science Projects

• 43 Free Datasets for Projects: Building an Irresistible Portfolio (DataQuest)
• Top 31 Machine Learning Projects with Datasets (IQ Team)

Collections by Statistical Method

• UCI Machine Learning Repository - table that can be filtered by data characteristics or topic
• DASL: Dataset and Story Library - filter by number of cases and keyword. In tab-delimited format.
• Papers with Code - Archive of papers, with code and linked to data

Collections for Specific Methods

• Generalized Linear Models Datasets - small, teaching datasets by link function
• Personality Testing Data - real data for many scales, good for factor analysis
• Centre for Multilevel Modelling Datasets - a small collection of multi-level datasets in MLwinN and fixed format. 

Real Data for Teaching

• Teaching & Learning with ICPSR - Over 50 guides, organized by topic and analysis type
• Teaching datasets & Ideas for teaching (UK Data Service)  - 4 projects, with guides, SPSS syntax, and data
• Journal of Statistics Education Data Archive - Data from years of articles

Simplified Data for Teaching

• Portal Project Teaching Database - A small collection of real-world data in ecology that has been simplified
• Census at School - Data from school children across the US on a variety of characteristics
• Dataset Generator for Learning Introductory Statistics - for particular tests and p-values

Machine Learning

• Azure Open Datasets - Clean data, some with Python code
• Reddit Open datasets for analysis - AI generated synthesis of may posts

Very Large Datasets

• National Electronic Injury Surveillance System (NEISS) - huge database of product injuries
• MovieLens - Movie ratings in datasets of varying size, good for merging
• Yelp Open Dataset - reviews, business attributes, and picture datasets. Get ideas from their challenges.
• AWS Data Exchange - Open Data - Many large datasets on a variety of topics (see also the Registry)

Networks and Spatial Relations

• Stanford Large Network Dataset Collection - for Social Networks, collaboration, road, and many others
• Sample Social Network Datasets - good for teaching and formatted for Gephi and similar tools 
• Index of Complex Networks - real-world data sets from across all domains of science, filterable by properties and topic.
• See the Geospatial Data InfoGuide​

Language and Media

• Image Sets by Computational Vision at Caltech - including bird, faces, toys, cars, buildings, and many more
• Hugging Face Hub - Primarily for NLP,, Computer Vision, and Audio.
• NLTK Corpora - Corpora and Trained Models easily imported into Python
• See the Text Mining InfoGuide