Use a scatterplot and the linear correlation coeicient 1' to determine whether there is a correlation between the two variables. (Note: Use software, and don't forget to look at the scatterplot!) I 0.7 1.1 2.8 3.8 4.3 5.4 6.8 7.1 8.6 9.2 10.2 11.1 12.1 13.7 14.7 9' 2.7 1.1 1.8 4.9 2.5 7.3 5.2 5.9 10 11.2 10.6 12.8 11.9 12.4 12.8 (a) r = 4' v (b) There is O A. a perfect positive correlation between a: and 3; O B. a nonlinear correlation between 2: and 3; O C. a negative correlation between 3 and y C) D. no correlation between a: and y 0 E. a perfect negative correlation between :I: and y 0 E a positive correlation between .t and y