R/interaction_triptych.R

In quartets: Datasets to Help Teach Statistics

#' Interaction Triptych Data
#'
#' This dataset contains 2,700 observations, generated under 3 different conditions
#'   * (1) Ideal case
#'   * (2) Floor effect, No latent interaction
#'   * (3) Smaller correlation at larger slope
#'
#' In the ideal scenario, only the slopes differ by moderator level. In the
#' "floor effect" scenario, there is an illusion of an interaction, even though
#'  only main effects were simulated. In the third scenario, the slopes increase
#'  with higher moderator values but the correlation decreases. Running only a
#'  linear model would not allow for appropriate differentiation between these
#'  effects.
#'
#'  In each case there is a potential moderator with "low" "medium" and "high" values.
#'
#' @references Rohrer, Julia M., and Ruben C. Arslan. "Precise answers to vague questions: Issues with interactions." Advances in Methods and Practices in Psychological Science 4.2 (2021): 25152459211007368.
#'
#' @format A dataframe with 2700 rows and 5 variables:
#'
#' * `dataset`: ideal, floor, or smaller correlation at larger slope
#' * `moderator`: a factor that potentially interacts with `x`, values: low, medium, or high
#' * `x`
#' * `y`
"interaction_triptych"