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#' econmath
#'
#' Wooldridge Source: Compiled by Professor Charles Ballard, Michigan State University Department of Economics. Professor Ballard kindly provided the data. Data loads lazily.
#'
#' @section
#'
#' Used in Text: 167, 185
#'
#' @docType data
#'
#' @usage data('econmath')
#'
#' @format A data.frame with 856 observations on 17 variables:
#' \itemize{
#' \item \strong{age: }{age in years}
#' \item \strong{work: }{hours worked per week}
#' \item \strong{study: }{hours studying per week}
#' \item \strong{econhs: }{=1 if economics in high school}
#' \item \strong{colgpa: }{college GPA, beginning semester}
#' \item \strong{hsgpa: }{high school GPA}
#' \item \strong{acteng: }{ACT English score}
#' \item \strong{actmth: }{ACT math score}
#' \item \strong{act: }{ACT composite}
#' \item \strong{mathscr: }{math quiz score, 0-10}
#' \item \strong{male: }{=1 if male}
#' \item \strong{calculus: }{=1 if taken calculus course}
#' \item \strong{attexc: }{=1 if past attndce 'excellent'}
#' \item \strong{attgood: }{=1 if past attndce 'good'}
#' \item \strong{fathcoll: }{=1 if father has BA}
#' \item \strong{mothcoll: }{=1 if mother has BA}
#' \item \strong{score: }{course score, in percent}
#' }
#' @source \url{http://www.cengage.com/c/introductory-econometrics-a-modern-approach-6e-wooldridge}
#' @examples str(econmath)
"econmath"
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