R/census2000.R

In wooldridge: 115 Data Sets from "Introductory Econometrics: A Modern Approach, 7e" by Jeffrey M. Wooldridge

#' census2000
#'
#' Wooldridge Source: Obtained from the United States Census Bureau by Professor Alberto Abadie of the Harvard Kennedy School of Government. Professor Abadie kindly provided the data. Data loads lazily.
#'
#' @section 
#'
#' Used in Text:  pages 452-453
#'
#' @docType data
#'
#' @usage data('census2000')
#'
#' @format A data.frame with 29501 observations on 6 variables:
#' \itemize{
#'  \item \strong{state: }{State (ICPSR code)}
#'  \item \strong{puma: }{Public Use Microdata Area}
#'  \item \strong{educ: }{educational attainment}
#'  \item \strong{lweekinc: }{log(weekly income)}
#'  \item \strong{exper: }{years workforce experience}
#'  \item \strong{expersq: }{exper^2}
#' }
#' @source \url{http://www.cengage.com/c/introductory-econometrics-a-modern-approach-6e-wooldridge}
#' @examples  str(census2000)
"census2000"