R/STAR.R

In kosukeimai/qss-package: Data and Code for "Quantitative Social Science: An Introduction"

#' STAR Project Data
#'
#' Contains data from the STAR (Student–Teacher Achievement Ratio) Project,
#' a four-year longitudinal study examining the effect of class size in early grade levels on educational
#' performance and personal development
#'
#' @format A data frame with 6325 rows and 6 variables:
#' \describe{
#'  \item{ race }{ integer: student’s race (white = 1, black = 2, Asian = 3, Hispanic = 4, Native American = 5, others = 6) }
#'  \item{ classtype }{ integer: type of kindergarten class (small = 1, regular = 2, regular with aid = 3) }
#'  \item{ yearssmall }{ integer: number of years in small classes }
#'  \item{ hsgrad }{ integer: high-school graduation (did graduate = 1, did not graduate = 0) }
#'  \item{ g4math }{ integer: total scaled score for the math portion of the fourth-grade standardized test }
#'  \item{ g4reading }{ integer: total scaled score for the reading portion of the fourth-grade standardized test }
#' }
#'
#'
#' @details
#' See \emph{QSS} Table 2.6.
#'
#'
#' @references
#' \itemize{
#' \item{ Imai, Kosuke. 2017. \emph{Quantitative Social Science: An Introduction}.
#' Princeton University Press. \href{http://press.princeton.edu/titles/11025.html}{URL}. }
#' \item { Mosteller, Frederick. 1997. “The Tennessee Study of Class Size in the Early School
#' Grades.” \emph{Bulletin of the American Academy of Arts and Sciences} 50(7): 14-25.
#' doi = 10.2307/3824562 }
#'}
"STAR"