
Appendix A
Tables
TABLE A.1 Critical Values for the Wilcoxon Signed-Rank Test
One-Tailed Test Two-Tailed Test
n
α
= 0.01
α
= 0.05
α
= 0.01
α
= 0.05
5 – 0 – –
6 – 2 – 0
7 0 3 – 2
8 1 5 0 3
9 3 8 1 5
10 5 10 3 8
11 7 13 5 10
12 9 17 7 13
13 12 21 9 17
14 15 25 12 21
15 19 30 15 25
16 23 35 19 29
17 27 41 23 34
18 32 47 27 40
19 37 53 32 46
20 43 60 37 52
21 49 67 42 58
22 55 75 48 65
23 62 83 54 73
24 69 91 61 81
25 76 100 68 89
26 84 110 75 98
27 92 119 83 107
28 101 130 91 116
29 110 140 100 126
30 120 151 109 137
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