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| Leinhardt   | R Documentation   |
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Data on Infant-Mortality
------------------------

Description
~~~~~~~~~~~

The ``Leinhardt`` data frame has 105 rows and 4 columns. The
observations are nations of the world around 1970.

Usage
~~~~~

::

    Leinhardt

Format
~~~~~~

This data frame contains the following columns:

income
    Per-capita income in U. S. dollars.

infant
    Infant-mortality rate per 1000 live births.

region
    A factor with levels: ``Africa``; ``Americas``; ``Asia``, Asia and
    Oceania; ``Europe``.

oil
    Oil-exporting country. A factor with levels: ``no``, ``yes``.

Details
~~~~~~~

The infant-mortality rate for Jamaica is misprinted in Leinhardt and
Wasserman; the correct value is given here. Some of the values given in
Leinhardt and Wasserman do not appear in the original New York Times
table and are of dubious validity.

Source
~~~~~~

Leinhardt, S. and Wasserman, S. S. (1979) Exploratory data analysis: An
introduction to selected methods. In Schuessler, K. (Ed.) *Sociological
Methodology 1979* Jossey-Bass.

*The New York Times*, 28 September 1975, p. E-3, Table 3.

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.
