American Chemical Society
Division of Chemical Education
Composite Norms
Analytical Chemistry Exam 2001
Score Percentile Score Percentile Score Percentile
50 100 33 68 16 6
49 100 32 64 15 5
48 100 31 61 14 5
47 100 30 57 13 4
46 100 29 52 12 3
45 100 28 47 11 2
44 99 27 41 10 1
43 99 26 35 9 1
42 98 25 30 8 0
41 96 24 26 7 0
40 94 23 22 6 0
39 93 22 19 5 0
38 90 21 16 4 0
37 87 20 13 3 0
36 83 19 10 2 0
35 80 18 9 1 0
34 74 17 7
Mean 28.48
Std deviation 7.58
Median 29
KR-21 rel 0.8
Std error/meas 3.37