E1.11 data frame has 23 rows and 4 columns.
This data frame contains the following columns:
a character vector, names and state of each metropolitan area.
a numeric vector, units of measurenment not given.
a numeric vector, units of measurement not given.
a numeric vector, in thousands.
Dacey, M.F.(1983) Social science Theories and Methods I: Models of data, Evanston: Northwestern University.
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