American Chemical Society
Division of Chemical Education
Composite Norms
Physical Chemistry Exam 1988
Score	Percentile	Score	Percentile	Score	Percentile
60	100	40	99	20	10
59	100	39	98	19	7
58	100	38	97	18	5
57	100	37	97	17	3
56	100	36	96	16	1
55	100	35	95	15	1
54	100	34	91	14	0
53	100	33	87	13	0
52	100	32	82	12	0
51	100	31	79	11	0
50	100	30	73	10	0
49	100	29	66	9	0
48	100	28	61	8	0
47	100	27	55	7	0
46	100	26	47	6	0
45	100	25	41	5	0
44	100	24	35	4	0
43	100	23	28	3	0
42	100	22	20	2	0
41	99	21	15	1	0
Mean		26.65
Std deviation		5.65
Median		26.4
KR-21 rel		0.55
Std error/meas		3.81