ABCDEFGHIJKLMNOPQRSTUVWXYZ
1
Calculating Sample Size for Conjoint Experiments
2
Instructions:
1. Input the number of sets you want each respondent to review, the number of cards each respondent will see per set, and the largest number of levels per attribute - which is the greatest number of levels that any one attribute contains.
2. Review the recommened sample sizes, and increase or decreate the number of sets and set size as needed to achieve your ideal sample size.
3
4
5
Number of sets*
6
Number of cards per set**5
7
Largest number of levels per attribute4
8
Preferred Sample Size#REF!
9
Minimum Sample Size#REF!
10
11
12
13
*We recommend no more than 10 sets, as reviewing more than 10 sets can cause respondent fatigue.
14
*We recommend no more four cards per set, as higher numbers of cards per set can cause respondent fatigue.
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100