PennController for IBEX › Forums › Support › Lists randomization › Reply To: Lists randomization
November 8, 2022 at 3:01 pm
#9699
![](https://www.pcibex.net/wp-content/uploads/2018/10/IMG_8365-e1540835663655-150x150.jpg)
Keymaster
Hi Yev,
Your two tables to have 16 groups each, but only 7 groups are shared by the two tables (10
,11
,12
,13
,14
,15
,16
). The other 9 groups are different: 1
(study) vs 1
(test), 2
(study) vs 2
(test), etc.
Because
(the space character) comes before any digit in the alphabetical order, the second possible value of group
for example in the study table is 2
, but 10
in the test table (because 1
comes before 2
and 0
comes before 1
). So any participant running with a counter value of 2 (or modulo 2) will be assigned group 2
from the study table, and group 10
from the test table
Jeremy