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