American Chemical Society
Division of Chemical Education
Composite Norms
Inorganic Chemistry Form 1998
Score	Percentile	Score	Percentile	Score	Percentile
60	100	39	86	18	11
59	100	38	84	17	8
58	100	37	81	16	6
57	100	36	77	15	4
56	100	35	74	14	3
55	100	34	71	13	2
54	100	33	68	12	1
53	99	32	65	11	1
52	99	31	62	10	0
51	99	30	60	9	0
50	98	29	55	8	0
49	97	28	51	7	0
48	97	27	47	6	0
47	96	26	44	5	0
46	95	25	40	4	0
45	94	24	36	3	0
44	94	23	32	2	0
43	92	22	27	1	0
42	90	21	21
41	89	20	17
40	88	19	15
Mean		28.75
Std deviation		9.23
Median		27.75
KR-21 rel		0.84
Std error/meas		3.71