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| Ericksen   | R Documentation   |
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The 1980 U.S. Census Undercount
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Description
~~~~~~~~~~~

The ``Ericksen`` data frame has 66 rows and 9 columns. The observations
are 16 large cities, the remaining parts of the states in which these
cities are located, and the other U. S. states.

Usage
~~~~~

::

    Ericksen

Format
~~~~~~

This data frame contains the following columns:

minority
    Percentage black or Hispanic.

crime
    Rate of serious crimes per 1000 population.

poverty
    Percentage poor.

language
    Percentage having difficulty speaking or writing English.

highschool
    Percentage age 25 or older who had not finished highschool.

housing
    Percentage of housing in small, multiunit buildings.

city
    A factor with levels: ``city``, major city; ``state``, state or
    state-remainder.

conventional
    Percentage of households counted by conventional personal
    enumeration.

undercount
    Preliminary estimate of percentage undercount.

Source
~~~~~~

Ericksen, E. P., Kadane, J. B. and Tukey, J. W. (1989) Adjusting the
1980 Census of Population and Housing. *Journal of the American
Statistical Association* **84**, 927â€“944 [Tables 7 and 8].

References
~~~~~~~~~~

Fox, J. (2008) *Applied Regression Analysis and Generalized Linear
Models*, Second Edition. Sage.

Fox, J. and Weisberg, S. (2011) *An R Companion to Applied Regression*,
Second Edition, Sage.
