1. Balance Scale: Balance scale weight & distance database
2. Balloons: Data previously used in cognitive psychology experiment; 4 data sets represent different conditions of an experiment
3. Congressional Voting Records: 1984 United Stated Congressional Voting Records; Classify as Republican or Democrat
4. Hayes-Roth: Topic: human subjects study
5. Nursery: Nursery Database was derived from a hierarchical decision model originally developed to rank applications for nursery schools.