Saving the results from the multiple sample size simulations allows for the creation of both a power curve and an accuracy curve, which is a graph of the (1–α)% CI width as a function of sample size. To create the the former, use the plotPower() function with the parameter of interest as the value for the powerParam argument and theαvalue as the value for the alpha argument. To crate the latter, use the plotCIwidth() function with the parameter of interest as the value for the targetParam argument and 1–α as thevalue for the assurance argument.2 Power and accuracy curves using sample sizes spanning 200-400 for the 1−2 relation are shown in Figures 3a and 3b