1% Generated by roxygen2: do not edit by hand
2% Please edit documentation in R/plm-package.R
3\docType{data}
4\name{Males}
5\alias{Males}
6\title{Wages and Education of Young Males}
7\format{
8A data frame containing :
9\describe{
10\item{nr}{identifier}
11\item{year}{year}
12\item{school}{years of schooling}
13\item{exper}{years of experience (computed as \code{age-6-school})}
14\item{union}{wage set by collective bargaining?}
15\item{ethn}{a factor with levels \verb{black, hisp, other}}
16\item{married}{married?}
17\item{health}{health problem?}
18\item{wage}{log of hourly wage}
19\item{industry}{a factor with 12 levels}
20\item{occupation}{a factor with 9 levels}
21\item{residence}{a factor with levels \verb{rural_area, north_east, northern_central, south}}
22}
23}
24\source{
25Journal of Applied Econometrics data archive
26\url{http://qed.econ.queensu.ca/jae/1998-v13.2/vella-verbeek/}.
27}
28\description{
29A panel of 545 observations from 1980 to 1987
30}
31\details{
32\emph{total number of observations} : 4360
33
34\emph{observation} : individuals
35
36\emph{country} : United States
37}
38\references{
39\insertRef{VELL:VERB:98}{plm}
40
41\insertRef{VERB:04}{plm}
42}
43\keyword{datasets}
44