Regression-Discontinuity AnalysisAnalysis RequirementsThe basic RD Design is a two-group pretest-posttest model as indicated in the design notation. As in other versions of this design structure (e.g. the Analysis of Covariance Randomized Experiment, the Nonequivalent Groups Design), we will need a statistical model that includes a term for the pretest, one for the posttest, and a dummy-coded vari