American Chemical Society
Division of Chemical Education
Composite Norms
Genreal Chemistry (Brief Test) 1998
Score	Percentile	Score	Percentile	Score	Percentile
50	100	33	89	16	13
49	100	32	86	15	9
48	100	31	82	14	6
47	100	30	78	13	4
46	100	29	75	12	3
45	99	28	72	11	2
44	99	27	69	10	2
43	99	26	64	9	1
42	99	25	58	8	0
41	98	24	51	7	0
40	97	23	46	6	0
39	96	22	41	5	0
38	95	21	35	4	0
37	94	20	31	3	0
36	93	19	27	2	0
35	91	18	22	1	0
34	90	17	18
Mean		24.15
Std deviation		7.36
Median		23.8
KR-21 rel		0.79
Std error/meas		3.41