American Chemical Society
Division of Chemical Education
Composite Norms
Inorganic Chemistry Form 1991
Score	Percentile	Score	Percentile	Score	Percentile
60	100	40	93	20	38
59	100	39	92	19	34
58	100	38	91	18	31
57	100	37	90	17	26
56	100	36	89	16	21
55	100	35	87	15	17
54	100	34	85	14	14
53	100	33	83	13	12
52	100	32	80	12	9
51	100	31	77	11	6
50	100	30	74	10	4
49	99	29	72	9	2
48	99	28	69	8	1
47	98	27	68	7	1
46	97	26	65	6	1
45	97	25	60	5	0
44	96	24	55	4	0
43	95	23	52	3	0
42	95	22	48	2	0
41	94	21	44	1	0
Mean		23.9
Std deviation		9.52
Median		22.5
KR-21 rel		0.86
Std error/meas		3.62