American Chemical Society
Division of Chemical Education
Composite Norms
Genreal Chemistry (Brief Test) 2006
Score	Percentile	Score	Percentile	Score	Percentile
50	100	33	76	16	6
49	100	32	71	15	4
48	100	31	68	14	2
47	99	30	64	13	2
46	99	29	60	12	1
45	98	28	56	11	1
44	97	27	52	10	0
43	97	26	47	9	0
42	96	25	42	8	0
41	95	24	38	7	0
40	92	23	32	6	0
39	91	22	28	5	0
38	88	21	24	4	0
37	86	20	20	3	0
36	83	19	16	2	0
35	80	18	12	1	0
34	77	17	9
Mean		27.45
Std deviation		8.08
Median		26.0
KR-21 rel		0.83
Std error/meas		3.36