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.
This data frame contains the following columns:
Total 1968 population, 1000s.
Percent nonwhite population, 1960.
Population per square mile, 1968.
Crime rate per 100,000, 1969.
United States (1970) Statistical Abstract of the United States. Bureau of the Census.
Fox, J. and Weisberg, S. (2011) An R Companion to Applied Regression, Second Edition, Sage.
Freedman, J. (1975) Crowding and Behavior. Viking.
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