A random sample of 100 high school students was asked, "Do you prefer to be a leader or a follower?" The responses were then classified according to grade level. Here is a bar graph of the results:

Grade and Leadership Preference 30 25 25 20 18 16 Frequency 15 12 12 Leader 10 O Follower 6 4 5 9th 10th 11th 12th Grade Level25 20 15 Number of Friends Who Are Meaningful 10 5 0 0 200 400 600 800 1,000 1,200 Number of Friends on Favorite Social Media Site Predictor Coef SE Coef T P Constant 7.22 0.1915 37.707 0.000 Meaningful 0 . 013 0. 000322 40 . 408 0. 000 S = 0.557 R-sq = 0.9714 R-sq (adj ) = 0.9708