1. cat::belt
    Data on driver injury and seat belt use
    csv| json| rda| rds
    matrix|80 x 7
  2. cat::belt.frame
    Data on driver injury and seat belt use
    csv| xlsx| json| ndjson| rda| rds
    data.frame|80 x 7
  3. cat::crimes
    U.S. National Crime Survey
    csv| json| rda| rds
    matrix|9 x 3
  4. cat::older
    Older people dataset
    csv| json| rda| rds
    matrix|144 x 7
  5. cat::older.frame
    Older people dataset
    csv| xlsx| json| ndjson| rda| rds
    data.frame|144 x 7