Check Randomization - by: dgiacometti

Dear all,

I've performed some test and it appears that the randomization does not work.

I want to randomize in half participants to two different question groups.

I created a hidden question (equation type) using the following string:

{if(is_empty(Q1),floor(rand(1,2)),Q1)}

So it should randomize in half since the condition is Q1 == 1 for the first group and Q1 == 2 for the second.

I did some tests and in one case I had 6 (1) and 4 (2) (for this I set the quota at 10) and in the other 3 (1) and 7 (1).

Does the IP address have any influence on this?

I will have 100 participants in my survey. How can I be sure that they are split 50% in each question group?

Thank you very much in advance.

Dg