PHYS 202 E ANSWERS Question Number/Correct Answer(s)/Weight Factor * = All answers correct. ** = Question deleted from grading. 1/A / 1.0 2/B / 1.0 3/D / 1.0 4/D / 1.0 5/A / 1.0 6/D / 1.0 7/D / 1.0 8/C / 1.0 9/C / 1.0 10/A / 1.0 11/C / 1.0 12/B / 1.0 13/A / 1.0 14/D / 1.0 15/C / 1.0 16/C / 1.0 17/C / 1.0 18/B / 1.0 19/A / 1.0 20/D / 1.0 ID NO. POINT SCORE PERCENTILE ANSWERS IN ASCENDING ORDER 1 2 3 4 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 ANSWER KEY: (See modifications above) A B D D A D D C C A C B A D C C C B A D SSN#Field 70.00 27. A B D A A D D C C A B A A B D B C B A D SSN#Field 90.00 91. A B D D A D D C C A C B A D C B C B C D SSN#Field 95.00 98. A B D D A D D C C A C A A D C C C B A D SSN#Field 85.00 75. A B D D A D D C C A C A A D C C C B C B SSN#Field 75.00 45. A A D D A D C C C A C B A D B B C B C D SSN#Field 60.00 16. A A D D A D C D C A C B A A D B C B B B SSN#Field 90.00 91. A B D D A D D C C A C B A D C B C B C D SSN#Field 80.00 61. A B D A A D D C C A C B C D D C C B B D SSN#Field 55.00 5. A A D B C D B B C A A A A D C B C B B D SSN#Field 70.00 27. A B D D A D C C C A C A C D D B C A A D SSN#Field 75.00 45. A A D D A D D C C A C B A A D B C B C D SSN#Field 60.00 16. A B D D A C B C C A C A A A B B C A A B SSN#Field 75.00 45. A B D D A D D D C A A B A C D B C B A D SSN#Field 85.00 75. A B D D A D D C C A C A A D C B C B C D SSN#Field 85.00 75. A B D D A D C C C A B B A D C B C B A D SSN#Field 85.00 75. A B D D A D B C C A C B A D C B C B C D SSN#Field 75.00 45. A B D D A D D C C A C A A C B A C B C D SSN#Field 75.00 45. A B D D A C D C C A C B A B D B C B C D SSN#Field 55.00 5. A A D D A C C C C A B A A B A D C B A B SSN#Field 60.00 16. A A D D D D C C C C B A A B C B C B A D SSN#Field 85.00 75. A B D D A D D C C A C C A B C B C B A D SSN#Field 75.00 45. A A D D A D D C C A C B A A C B C B B B There were 20 questions of which 20 were graded. 22 student exams were graded. Maximum Possible Points = 100. Statistics Mean Score = 75.45 Median Score = 75.00 Mean Deviation = 9.17 Standard Deviation = 11.47 Grades in descending order point score Percentile T-score 95.00 98. 67.04 90.00 91. 62.68 90.00 91. 62.68 85.00 75. 58.32 85.00 75. 58.32 85.00 75. 58.32 85.00 75. 58.32 85.00 75. 58.32 80.00 61. 53.96 75.00 45. 49.60 75.00 45. 49.60 75.00 45. 49.60 75.00 45. 49.60 75.00 45. 49.60 75.00 45. 49.60 70.00 27. 45.25 70.00 27. 45.25 60.00 16. 36.53 60.00 16. 36.53 60.00 16. 36.53 55.00 5. 32.17 55.00 5. 32.17 Distribution of grades Grade Number interval 55 2 ** 56 0 57 0 58 0 59 0 60 3 *** 61 0 62 0 63 0 64 0 65 0 66 0 67 0 68 0 69 0 70 2 ** 71 0 72 0 73 0 74 0 75 6 ****** 76 0 77 0 78 0 79 0 80 1 * 81 0 82 0 83 0 84 0 85 5 ***** 86 0 87 0 88 0 89 0 90 2 ** 91 0 92 0 93 0 94 0 95 1 * Answer Distribution Top and bottom refer to top and bottom 27 percent of students. Question Group Correct Weight Percent a b c d e Blank Difficulty Index number Answer Factor Correct Discrimination Index 1 all A 1.00 100.00 22 0 0 0 0 0 top 100.00 8 0 0 0 0 0 dif = 100.00 bottom 100.00 5 0 0 0 0 0 dis = .00 2 all B 1.00 68.18 7 15 0 0 0 0 top 100.00 0 8 0 0 0 0 dif = 69.23 bottom 20.00 4 1 0 0 0 0 dis = .80 3 all D 1.00 100.00 0 0 0 22 0 0 top 100.00 0 0 0 8 0 0 dif = 100.00 bottom 100.00 0 0 0 5 0 0 dis = .00 4 all D 1.00 86.36 2 1 0 19 0 0 top 100.00 0 0 0 8 0 0 dif = 92.31 bottom 80.00 0 1 0 4 0 0 dis = .20 5 all A 1.00 90.91 20 0 1 1 0 0 top 100.00 8 0 0 0 0 0 dif = 84.62 bottom 60.00 3 0 1 1 0 0 dis = .40 6 all D 1.00 86.36 0 0 3 19 0 0 top 100.00 0 0 0 8 0 0 dif = 84.62 bottom 60.00 0 0 2 3 0 0 dis = .40 7 all D 1.00 59.09 0 3 6 13 0 0 top 75.00 0 1 1 6 0 0 dif = 46.15 bottom .00 0 2 3 0 0 0 dis = .75 8 all C 1.00 86.36 0 1 19 2 0 0 top 100.00 0 0 8 0 0 0 dif = 84.62 bottom 60.00 0 1 3 1 0 0 dis = .40 9 all C 1.00 100.00 0 0 22 0 0 0 top 100.00 0 0 8 0 0 0 dif = 100.00 bottom 100.00 0 0 5 0 0 0 dis = .00 10 all A 1.00 95.45 21 0 1 0 0 0 top 100.00 8 0 0 0 0 0 dif = 92.31 bottom 80.00 4 0 1 0 0 0 dis = .20 11 all C 1.00 72.73 2 4 16 0 0 0 top 87.50 0 1 7 0 0 0 dif = 69.23 bottom 40.00 1 2 2 0 0 0 dis = .47 12 all B 1.00 50.00 10 11 1 0 0 0 top 50.00 3 4 1 0 0 0 dif = 38.46 bottom 20.00 4 1 0 0 0 0 dis = .30 13 all A 1.00 90.91 20 0 2 0 0 0 top 100.00 8 0 0 0 0 0 dif = 100.00 bottom 100.00 5 0 0 0 0 0 dis = .00 14 all D 1.00 50.00 4 5 2 11 0 0 top 87.50 0 1 0 7 0 0 dif = 61.54 bottom 20.00 2 2 0 1 0 0 dis = .68 15 all C 1.00 50.00 1 3 11 7 0 0 top 100.00 0 0 8 0 0 0 dif = 76.92 bottom 40.00 1 1 2 1 0 0 dis = .60 16 all C 1.00 13.64 1 17 3 1 0 0 top 25.00 0 6 2 0 0 0 dif = 15.38 bottom .00 0 4 0 1 0 0 dis = .25 17 all C 1.00 100.00 0 0 22 0 0 0 top 100.00 0 0 8 0 0 0 dif = 100.00 bottom 100.00 0 0 5 0 0 0 dis = .00 18 all B 1.00 90.91 2 20 0 0 0 0 top 100.00 0 8 0 0 0 0 dif = 92.31 bottom 80.00 1 4 0 0 0 0 dis = .20 19 all A 1.00 40.91 9 4 9 0 0 0 top 37.50 3 0 5 0 0 0 dif = 46.15 bottom 60.00 3 2 0 0 0 0 dis = -.22 20 all D 1.00 77.27 0 5 0 17 0 0 top 87.50 0 1 0 7 0 0 dif = 69.23 bottom 40.00 0 3 0 2 0 0 dis = .47