#' Questionnaire Answers
#'
#' @description
#' A data frame containing a sample with the answers of students.
#'
#' @usage questionnaire
#'
#' @docType data
#'
#' @format A data frame with 50 observations of 8 columns:
#' \describe{
#' \item{\code{gender}}{A factor with the student gender}
#' \item{\code{writing.hand}}{A factor with the writing hand of the
#' students (left, right)}
#' \item{\code{fold.arm}}{A factor with the top hand when the students
#' fold their arms}
#' \item{\code{pulse}}{Integer with the pulse rate of students
#' (beats per minute)}
#' \item{\code{exercise}}{A factor with the frequency the students exercises
#' (none, some,frequently)}
#' \item{\code{smoke}}{A factor with the frequency the students smokes
#' (heavy, regularly, occasionally, never)}
#' \item{\code{height}}{Integer with the height of the students
#' (in centimeters)}
#' \item{\code{age}}{Integer with the age of the students}
#' }
#'
#' @name questionnaire
#'
NULL
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