trtools: Miscellaneous Tools for Teaching Statistics

#' Data from an experiment of the effect of salinity and temperature on hatching of sole.
#'
#' Tanks of eggs of English sole (\emph{Parophrys vetulus}) were exposed to different levels of salinity and temperature. The number of eggs in each tank that hatched was counted. 
#'
#' @format A data frame 72 observations on four variables.
#' \describe{
#'    \item{salinity:}{water salinity in g/kg}
#'    \item{temp:}{water temperature in degrees Celsius}
#'    \item{hatched:}{number of eggs that hatched}
#'    \item{total:}{number of eggs in tank}
#' }
#'
#' @note The data are originally from Alderdice and Forrester (1968), and are featured in Lindsey, Alderdice, and Pienaar (1970) and Lindsey (1975). 
#' 
#' @source Alderdice, D. F., & Forrester, C. R. (1968). Some effects of salinity and temperature on early development and survival of the English sole (\emph{Parophyrys vetulus}). \emph{Journal of Fisheries Research Board of Canada}, \emph{25(3)}, 495--521.
#' 
#' Lindsey, J. K., Alderdice, D. F., & Pienaar, L. V. (1970). Analysis of nonlinear models -- the nonlinear response model. \emph{Journal of the Fisheries Board of Canada}, \emph{27}, 765--791.
#' 
#' Lindsey, J. K. (1975). Likelihood analysis and tests for binary data. \emph{Journal of the Royal Statistical Society: Series C}, \emph{24(1)}, 1--16.
#' 
"sole"