For the first three semesters at college, Jane has been keeping track of the amount of time she spends studying for each test, and her mark on the test. For a similar time period, Don has been keeping track of the number of calories he consumes the day before he writes each test, and his mark on the test. Jane has calculated a Pearson r of + 0.71, and Don has calculated a Pearson r of +0.88. Indicate what these values tell us about the correlations in Jane’s and Don’s data sets. In which case is the cause-and-effect relationship likely to be stronger, and why?