stat340: Data and functions for BIAS at NMBU

#' STAT210example5.1: The Battery Design Experiment
#'
#' An engineer is designing a battery for use in a device that will be subjected
#' to some extreme variations in temperature. The engineer tests battery designs
#' with three different plate materials at three levels of temperatures to
#' investigate how these parameters affects the effective battery life.
#'
#' @format A data frame with 36 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{Material_Type} \tab factor \tab 3 types of material plates \tab (1, 2, 3)\cr
#'   \code{[,2]} \tab \code{Temperature} \tab factor \tab 3 levels of temperature in °F \tab (15, 70, 125)\cr
#'   \code{[,3]} \tab \code{Effective_life} \tab integer \tab Battery life in hours \tab (20 - 188)
#' }
#'
#' @details
#'
#' The data is from Example 5.1 in Design and Analysis of Experiments.
#' 9th Edition, EMEA Edition.
#'
#' @examples
#'
#' # A short summary of the variables
#' summary(STAT210example5.1)
#'
#' # First six and last 10 rows
#' head(STAT210example5.1)
#' tail(STAT210example5.1, n = 10)
#'
#' @source Montgomery, D. C. (2019) \emph{Design and Analysis of Experiments,
#' 9th Edition, EMEA Edition}. New York: Wiley.
#'
#' @docType data
#' @keywords datasets
#' @name STAT210example5.1
#' @usage STAT210example5.1
#'
"STAT210example5.1"