Data Science for Business and Decision Making

Table J

Critical Values of U_c for the Mann-Whitney U Test Considering P(U_cal < U_c) = αP(U_cal < U_c) = 0.05

N2\ N1	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
3	0	0	1	2	2	3	4	4	5	5	6	7	7	8	9	9	10	11
4	0	1	2	3	4	5	6	7	8	9	10	11	12	14	15	16	17	18
5	1	2	4	5	6	8	9	11	12	13	15	16	18	19	20	22	23	25
6	2	3	5	7	8	10	12	14	16	17	19	21	23	25	26	28	30	32
7	2	4	6	8	11	13	15	17	19	21	24	26	28	30	33	35	37	39
8	3	5	8	10	13	15	18	20	23	26	28	31	33	36	39	41	44	47
9	4	6	9	12	15	18	21	24	27	30	33	36	39	42	45	48	51	54
10	4	7	11	14	17	20	24	27	31	34	37	41	44	48	51	55	58	62
11	5	8	12	16	19	23	27	31	34	38	42	46	50	54	57	61	65	69
12	5	9	13	17	21	26	30	34	38	42	47	51	55	60	64	68	72	77
13	6	10	15	19	24	28	33	37	42	47	51	56	61	65	70	75	80	84
14	7	11	16	21	26	31	36	41	46	51	56	61	66	71	77	82	87	92
15	7	12	18	23	28	33	39	44	50	55	61	66	72	77	83	88	94	100
16	8	14	19	25	30	36	42	48	54	60	65	71	77	83	89	95	101	107
17	9	15	20	26	33	39	45	51	57	64	70	77	83	89	96	102	109	115
18	9	16	22	28	35	41	48	55	61	68	75	82	88	95	102	109	116	123
19	10	17	23	30	37	44	51	58	65	72	80	87	94	101	109	116	123	130
20	11	18	25	32	39	47