21-241: Matrix Algebra 2005 Spring Course Statistics Cumulative Average Cumulative Statistics Mean by Recitation Grade Cutoffs Grade Distribution Min (%) 24.56 Section A 71.64 A cutoff 79.67 =M + 0.46 Sd A's 45 39% Q1 (%) 58.06 Mean 71.80 Section B 72.01 B cutoff 69.67 =M - 0.13 Sd B's 26 22% Q2 (%) 75.11 Sdev 16.87 Section C C cutoff 59.67 =M - 0.72 Sd C's 15 13% Q3 (%) 84.66 Section D D cutoff 42.00 =M - 1.77 Sd D's 24 21% Max (%) 97.56 Section E R's 6 5% Homework Average Homework Statistics Mean by Recitation Grade Cutoffs Grade Distribution Min (%) 5.94 Section A 80.05 A cutoff 85 =M + 0.25 Sd A's 61 53% Q1 (%) 74.06 Mean 79.58 Section B 79.05 B cutoff 75 =M - 0.22 Sd B's 21 18% Q2 (%) 85.54 Sdev 21.39 Section C C cutoff 65 =M - 0.69 Sd C's 14 12% Q3 (%) 94.43 Section D D cutoff 50 =M - 1.39 Sd D's 6 5% Max (%) 113.11 Section E R's 13 11% Exam #1 Exam Statistics Mean by Recitation Grade Cutoffs Grade Distribution Min (%) 32 Section A 81.77 A cutoff 85 =M + 0.15 Sd A's 54 47% Q1 (%) 73 Mean 82.71 Section B 83.84 B cutoff 75 =M - 0.52 Sd B's 26 23% Q2 (%) 84 Sdev 15.06 Section C C cutoff 65 =M - 1.18 Sd C's 20 17% Q3 (%) 96 Section D D cutoff 50 =M - 2.18 Sd D's 10 9% Max (%) 100 Section E R's 5 4% Exam #2 Exam Statistics Mean by Recitation Grade Cutoffs Grade Distribution Min (%) 19 Section A 61.27 A cutoff 70 =M + 0.47 Sd A's 39 34% Q1 (%) 48 Mean 61.29 Section B 61.59 B cutoff 60 =M - 0.08 Sd B's 20 17% Q2 (%) 60 Sdev 18.42 Section C C cutoff 50 =M - 0.62 Sd C's 25 22% Q3 (%) 75 Section D D cutoff 35 =M - 1.43 Sd D's 21 18% Max (%) 98 Section E R's 10 9% Exam #3 Exam Statistics Mean by Recitation Grade Cutoffs Grade Distribution Min (%) 2 Section A 70.87 A cutoff 80 =M + 0.48 Sd A's 43 39% Q1 (%) 52 Mean 69.34 Section B 68.02 B cutoff 70 =M + 0.02 Sd B's 18 16% Q2 (%) 73 Sdev 22.07 Section C C cutoff 60 =M - 0.43 Sd C's 12 11% Q3 (%) 88 Section D D cutoff 35 =M - 1.56 Sd D's 29 26% Max (%) 100 Section E R's 9 8%