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
6000
 
16
1200
 
28
450
5
5000
 
17
1100
 
29
425
6
4000
 
18
1000
 
30
400
7
3500
 
19
850
 
31
380
8
3100
 
20
800
 
32
370
9
2750
 
21
750
 
33
360
10
2500
 
22
650
 
34
350
11
2250
 
23
600
 
35
340
12
2000
 
24
575
 
36
330
13
1750
 
25
550
 
37
320
14
1600
 
26
525
 
38
310
15
1500
 
27
500
 
39-40
300

Calculating survey length

Calculating number of respondents

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

Additional details