Size limits for TESS experiments

The shorter an experiment, the more respondents on which it can be constructed. For each unit of experiment length, the maximum number of available respondents (subject to guidelines below) is as follows:

length

max N
 
length
max N
 
length
max N
4 or less
4400
 
16
1700
 
28
1050
5
3500
 
17
1600
 
29
1050
6
3450
 
18
1500
 
30
1000
7
3100
 
19
1450
 
31
950
8
2700
 
20
1400
 
32
950
9
2400
 
21
1400
 
33
900
10
2150
 
22
1350
 
34
900
11
2100
 
23
1300
 
35
850
12
1900
 
24
1250
 
36
850
13
1800
 
25
1200
 
37
800
14
1650
 
26
1150
 
38
800
15
1550
 
27
1100
 
39-40
750

Calculating survey length

Calculating number of respondents

What if my experiment needs to be larger than what these limits allow?

Additional details