Implementando dataset clover

R/clover.R

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+#' Nitrogen content of red clover plants
+#'
+#' Includes the nitrogen content (mg) of 30 red clover plants inoculated with
+#' one of four single-strain cultures of \emph{Rhizobium trifolii} or a
+#' composite of five \emph{Rhizobium meliloti} strains, resulting in six
+#' treatments in total.
+#'
+#' Data originally from an experiment by Erdman (1946), conducted in a
+#' greenhouse using a completely random design. The current dataset was
+#' presented by Steel and Torrie (1980) and later used by Bautista et al. (1997)
+#' to illustrate their proposed procedure.
+#'
+#' @format
+#' A tibble with 30 rows and 2 columns:
+#' \describe{
+#' \item{treatment}{a factor denoting the treatment applied to each plant.}
+#' \item{nitrogen}{a number denoting the nitrogen content of each plant
+#' (miligrams).}
+#' }
+#' @source Steel, R., & Torrie, J. (1980). \emph{Principles and procedures of
+#' statistics: A biometrical approach (2nd ed.)}. San Francisco: McGraw-Hill.
+#' Available at: <https://archive.org/details/principlesproce00stee>
+#'
+#' @references Bautista, M. G., Smith, D. W., & Steiner, R. L. (1997).
+#' A Cluster-Based Approach to Means Separation. \emph{Journal of Agricultural,
+#' Biological, and Environmental Statistics, 2}(2), 179-197.
+#' <https://doi.org/10.2307/1400402>
+#'
+#' Erdman, L. W. (1946). Studies to determine if antibiosis occurs among
+#' rhizobia. \emph{Journal of the American Society of Agronomy, 38},
+#' 251-258. <https://doi.org/10.2134/agronj1946.00021962003800030005x>
+#'
+#' @examples
+#' data(clover)
+#' summary(clover)
+"clover"