UN data frame has 207 rows and 2 columns.
The data are for 1998 and are from the United Nations; the observations
are nations of the world.
There are some missing data.
This data frame contains the following columns:
Infant morality rate, infant deaths per 1000 live births.
GDP per capita, in U.S.~dollars.
United Nations (1998) Social indicators. Originally from http://www.un.org/Depts/unsd/social/main.htm but no longer there.
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.