stat340: Data and functions for BIAS at NMBU

#' STAT210prob3.14: Tensile Strength of Different Fibre Blends
#'
#' A product developer is investigating the tensile strength of a new synthetic
#' fibre that will be used to make cloth for men's shirts. The strength is
#' usually affected by the percentage of cotton used in the blend of materials
#' for the fibre. The engineer conducts a completely randomized experiment with
#' five levels of cotton content and replicates the experiment 5 times.
#'
#' @format A data frame with 25 observations (rows) and 2 variables (columns).
#'
#' \tabular{llllr}{
#'   \tab \bold{Column name} \tab \bold{Data type} \tab \bold{Description} \tab \bold{Values}\cr
#'   \code{[,1]} \tab \code{Cotton_Weight} \tab integer \tab Percentage weight of cotton in the blend \tab (15 - 35)\cr
#'   \code{[,2]} \tab \code{Observations} \tab integer \tab The tensile strength of the fibre \tab (7 - 25)
#' }
#'
#' @details
#'
#' This is data from Exercise3.14 in Design and Analysis of Experiments, 9th
#' Edition, EMEA Edition.
#'
#' @examples
#'
#' # A short summary of variables
#' summary(STAT210prob3.14)
#'
#' # Tensile strength per level of cotton content
#' boxplot(Observations ~ Cotton_Weight,
#'         data = STAT210prob3.14, col = "navajowhite3")
#'
#' @source Montgomery, D. C. (2019) \emph{Design and Analysis of Experiments,
#' 9th Edition, EMEA Edition}. New York: Wiley.
#'
#' @docType data
#' @keywords datasets
#' @name STAT210prob3.14
#' @usage STAT210prob3.14
#'
"STAT210prob3.14"