Coleman Data Set, Containing Information on 20 Schools from the
Mid-Atlantic and New England States, from Mosteller and Tukey (1977)

20 subjects, 7 variables:

1. Index
2. staff salaries per pupil (x[1])
3. percent of white-collar fathers (x[2])
4. socioeconomic status composite deviation: means for family size,
   family intactness, father's education, mother's education, and
   home items (x[3])
5. mean teacher's verbal test score (x[4])
6. mean mother's educational level (x[5]), one unit is equal to two
   school years
7. verbal mean test score (y, all sixth graders)