DR. CAROL SCENARIO: Dr. Carol conducts a study examining the…
DR. CAROL SCENARIO: Dr. Carol conducts a study examining the relationship between exam performance, number of class absences, and amount of time spent studying in a large random sample. Below are her findings. Assume we are using .05 as our level of significance. Exam performance and number of class absences: r = −.67, p = .01 Exam performance and time spent studying: r = .31, p = .04 Number of class absences and time spent studying: r = .04, p = .66 Dr. Carol creates a scatterplot of the relationship between exam performance and number of class absences. In doing so, she realizes there are three scores that seem to be very extreme and are nowhere near the other points on the scatterplot. Specifically, it appears that three people report very high levels of class absences and very low levels of exam performance. Which of the following statements is NOT true?