R/rd-yugo_sales.R

In svmiller/stevedata: Steve's Toy Data for Teaching About a Variety of Methodological, Social, and Political Topics

#' @importFrom tibble tibble
NULL

#' Yugo Sales in the United States, 1985-1992
#'
#' A data set on Yugo sales against two competing models in the United States
#'  from 1985 to 1992.
#'
#' @format A data frame with 24 observations on the following 3 variables.
#' \describe{
#' \item{\code{year}}{the year}
#' \item{\code{car}}{the car type, either the Hyundai Excel, Yugo, or Toyota Tercel}
#' \item{\code{sales}}{the number of units sold in the United States}
#' }
#'
#' @details Data come from a website then known as \code{carsalesbase.com}. I'm
#' aware the inclusion of the Tercel is questionable since the third generation
#' of Tercels were quite different from the first and second generations.
#' However, I use these data to illustrate how poorly the Yugo fared against
#' competing models, including the first and second generation Tercels. I think
#' the inclusion is fair for that purpose.
#'
"yugo_sales"