R/STAT210example5.2.R

In thoree/stat340: Data and functions for BIAS at NMBU

#' STAT210example5.2: Impurity in Chemical Products
#'
#' The impurity present in a chemical product is affected by two factors:
#' pressure and temperature. This data shows a factorial experiment with a
#' single replicate.
#'
#' @format A data frame with 15 observations (rows) and 3 variables (columns).
#' \tabular{llllr}{
#'   \tab \bold{Column name} \tab \bold{Data type} \tab \bold{Description} \tab \bold{Values}\cr
#'   \code{[,1]} \tab \code{Temperature} \tab factor \tab 3 levels of temperature in °F \tab (100, 125, 150)\cr
#'   \code{[,2]} \tab \code{Pressure} \tab factor \tab 5 levels of pressure \tab (25, 30, 35, 40, 45)\cr
#'   \code{[,3]} \tab \code{Impurity} \tab integer \tab The impurity of each product \tab (1 - 6)
#' }
#'
#' @details
#'
#' The data is from Example 5.2 in Design and Analysis of Experiments,
#' 9th Edition, EMEA Edition.
#'
#' @examples
#'
#' # A short summary of the variables
#' summary(STAT210example5.2)
#'
#' # Column names
#' colnames(STAT210example5.2)
#'
#' # The structure of the object
#' str(STAT210example5.2)
#'
#' @source Montgomery, D. C. (2019) \emph{Design and Analysis of Experiments,
#' 9th Edition, EMEA Edition}. New York: Wiley.
#'
#' @docType data
#' @keywords datasets
#' @name STAT210example5.2
#' @usage STAT210example5.2
#'
"STAT210example5.2"