low 8 median 39 average 42.3 high 83 A: 75- (3) B: 60-74 (3) C: 46-59 (4) D: 26-45 (5) F: -25 (7) distribution: 80- : 1 70-79: 4 60-69: 1 50-59: 2 40-49: 3 30-39: 4 20-29: 4 10-19: 3 -10: 1