I am new to Sawtooth and stumbled upon two questions:
1.) How random is "SysRand"? A colleague of mine used SysRand (using the Skip logic "SysRand(1,3)=1") for his survey. He had three groups. After a week GroupA contained 133 surveys, GroupB had 33 and GroupC 38. Not so random?
2.) To avoid this I was thinking of combining SysRand and Quota Control. How I am doing this? For SysRand I used a free-format question with a hidden variable, it looks like that:
<input name="Random_CODE" type="hidden" value="
Begin Unverified Perl
Is this code the same to the one of my colleague besides I am getting an extra variable into my database?
How do I setup now that all three SysRand Groups have a maximum of 50 surveys? I dont really want to disqualify people. Suppose GroupA has already 50 and is full, I want that the next one is randomly assigned to GroupB or GroupC, so I am not "wasting" survey takers.
Thank you in advance!