The Leinhardt data frame has 105 rows and 4 columns.
The observations are nations of the world around 1970.
LeinhardtThis data frame contains the following columns:
Per-capita income in U. S. dollars.
Infant-mortality rate per 1000 live births.
A factor with levels:
Africa;
Americas;
Asia, Asia and Oceania;
Europe.
Oil-exporting country.
A factor with levels:
no,
yes.
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.
Fox, J. (2016) Applied Regression Analysis and Generalized Linear Models, Third Edition. Sage.
Fox, J. and Weisberg, S. (2019) An R Companion to Applied Regression, Third Edition, Sage.