report rep_sum mid final total grade 7 10 8 10 7 8 50 85 90 86.5 A+ 6 10 8 10 7 7 48 55 46 58.9 B0 6 10 8 8 9 7 48 83 88 84.1 A+ 7 10 10 8 7 7 49 65 52 64.8 B+ 5 10 10 10 9 7 51 62 30 56.1 B0 9 10 8 10 9 7 53 92 83 87.3 A+ 8 10 8 10 9 7 52 92 85 87.6 A+ 9 10 10 8 9 8 54 81 65 77.3 A0 5 10 8 8 9 7 47 83 58 71.6 A- 9 10 8 8 7 6 48 57 54 62.7 B+ 8 10 8 8 6 5 45 43 65 61.4 B+ 10 10 8 10 8 7 53 72 63 73.3 A- 10 10 10 10 7 7 54 53 60 66.9 B+ average 72.2 stdev 11 84 < A+ 78 < A0 < 83 72 < A- < 77 62 < B+ < 71 52 < B0 < 61