Apsychologist would like to examine the effects of different testing methods on the final performance of college students. one group gets regular quizzes, one group gets three large exams, and the third group only gets a final exam. at the end of the course, the psychologist interviews each student to get a measure of the student’s overall knowledge of the material. quizzes exams final only 4 1 0 6 4 2 3 5 0 7 2 2 we want to know if these data indicate any significant differences among the three methods