=+5. The file “ancova exercise.sav” includes simulated data for the ANCOVA example presented in the chapter (see also the Excel or plain text versions of this file). This was a pretest–posttest two-group design in which 60 students registered for a course in research methodology were assigned, at random, to a traditional version of the class or an Internet version of the class. All students attended an orientation session in which they were given a pretest of their research knowledge. The posttest scores are students’ grades for the class.