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#' catholic
#'
#' Wooldridge Source: Altonji, J.G., T.E. Elder, and C.R. Taber (2005), “An Evaluation of Instrumental Variable Strategies for Estimating the Effects of Catholic Schooling,” Journal of Human Resources 40, 791-821. Professor Elder kindly provided a subset of the data, with some variables stripped away for confidentiality reasons. Data loads lazily.
#'
#' @section
#'
#' Used in Text: pages 267, 551
#'
#' @docType data
#'
#' @usage data('catholic')
#'
#' @format A data.frame with 7430 observations on 13 variables:
#' \itemize{
#' \item \strong{id: }{person identifier}
#' \item \strong{read12: }{reading standardized score}
#' \item \strong{math12: }{mathematics standardized score}
#' \item \strong{female: }{=1 if female}
#' \item \strong{asian: }{=1 if Asian}
#' \item \strong{hispan: }{=1 if Hispanic}
#' \item \strong{black: }{=1 if black}
#' \item \strong{motheduc: }{mother's years of education}
#' \item \strong{fatheduc: }{father's years of education}
#' \item \strong{lfaminc: }{log of family income}
#' \item \strong{hsgrad: }{=1 if graduated from high school by 1994}
#' \item \strong{cathhs: }{=1 if attended Catholic HS}
#' \item \strong{parcath: }{=1 if a parent reports being Catholic}
#' }
#' @source \url{http://www.cengage.com/c/introductory-econometrics-a-modern-approach-6e-wooldridge}
#' @examples str(catholic)
"catholic"
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