Crowding and Crime in U. S. Metropolitan Areas
Freedman data frame has 110 rows and 4 columns.
The observations are U. S. metropolitan areas with 1968 populations
of 250,000 or more. There are some missing data.
United States (1970) Statistical Abstract of the United States. Bureau of the Census.
Freedman, J. (1975) Crowding and Behavior. Viking.