R/concrete.R

In hassediagrams: Hasse Diagram of the Layout Structure and Restricted Layout Structure

#' A fractional factorial design for investigating asphalt concrete production
#'
#' This is fractional factorial design given in Anderson and McLean (1974) p.256 from an experiment to investigate the effect of controllable variables/factors on the quality of asphalt concrete production.
#'
#' @format A half fraction factorial design of 16 runs on 6 factors. The 6 factors, each at two levels, included in the design are:
#' \describe{
#'   \item{Aggregate gradation (AG)}{Categoric factor with levels being fine and coarse.}
#'   \item{Compaction temperature (CoT)}{Numeric factor with low 250 and high 300.}
#'   \item{Asphalt content (AC)}{Numeric factor with low 5 and high 7.}
#'   \item{Curing condition (CC)}{Categoric factor with levels wrapped and unwrapped.}
#'   \item{Curing temperature (CuT)}{Numeric factor with low 45 and high 72.}
#'   \item{Run}{Categoric factor with levels 1-16.}
#' }
#'
#' @source Anderson, V.L. and McLean, R.A. (1974). *Design of Experiments.* Marcel Dekker Inc.: New York.
#'
#' @examples
#' data("concrete")
#' concrete
#'
#' @keywords datasets
#' @name concrete
#' @docType data
#' @usage data(concrete)
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