R/accidents.R

In trobinj/trtools: Miscellaneous Tools for Teaching Statistics

#' Traffic accident rate.
#'
#' Data from an observational study that recorded the number of accidents at eight locations before and after installation of traffic control measures.  
#'
#' @format A data frame 16 observations and four variables:
#' \describe{
#'    \item{accidents:}{number of accidents}
#'    \item{years:}{number of years of observation}
#'    \item{location:}{monitored location (one of eight)}
#'    \item{treatment:}{before or after introduction of traffic control measures}
#' }
#'
#' @note The data are from an example from Pawitan (2013). No other source is given so the data may be simulated. 
#'
#' @source Pawitan, Y. (2013). \emph{In all likelihood: Statistical modeling and inference using likelihood}. Oxford University Press. 
#' 
"accidents"