The data below represents the GPA of high school seniors as well as their ACT test scores. Display the data in a scatterplot and then calculate the sample correlation coefficient r. Is there a positive, negative, or no correlation between the variables? What are your conclusions?
ACT GPA
22.0 3.0
32.0 3.78
33.0 3.68
21.0 2.94
27.0 3.38
25.0 3.21
30.0 3.65