Hi there,

I have figured out how to randomly allocate my participants to 1 of 6 conditions, but now as I am nearing the end of the data collection phase of my survey I have realised that some conditions have way more participants than others. Is there anyway that I can disable conditions 2 and 5 so that participants are only allocated to conditions 1, 3, 4 and 6?

Any advice would be greatly appreciated!

Thank you,

Kelly

Hi, kporter0,
as far as I understand your respondents randomly answer 1 of 6 question(group)s.
This is done by an equation like randomNumber=rand(1,6) and relevance.
And relevance of questions or the equation you can change during a running survey.
In case you did it this way and the number of respondents in the 6 groups is not distributed equally, the "Random"-function is not working correctly (what I do not believe).

So I am sure you did something different.
What means "allocation of conditions to participants"?
And the words "I have figured out how to..." sounds like a more sophisticated self made algorithm.

I would like you to explain a little bit more.

Best regards
Joffm

Hi Joffm,

I have used the randomNumber=rand(1, 6) equation. I would ideally like to have 20 participants in each question group. Some question groups have 23 participants while other question groups only have 13 participants. Is there anyway I can direct participants to the groups that have fewer participants?

Thank you!

Hi, kporter0,
first: what did you expect, if you have such a small sample.
I had a look at a statistical table to see if there is really a significant difference.
In the binomial test the interval of convidence for 20 in a sample of 120 is: 10.5 - 24.6 (5% convidence.)
So all your group sizes are inside of the interval.
Did you roll a dice 120 times? Which result did you get?

But to solve your problem.

I assume you set relevance to the six groups :
Group1: randNumber==1
Group2: randNumber==2
Group3: randNumber=
...
well, just change the relevance.
Filled groups: relevance: 0 or even randNumber==10 (anything that's always false)
Group1: (randNumber==1) OR (randNumber=2)
Group3: (randNumber=) OR (randNumber=4)
Group4: randNumber==5
Group6: randNumber==6
Or whatever you want.

So you can lead more respondents to the less filled groups.

Best regards
Joffm

Capture random result to hidden question and control survey entry using quota on this question...

OMdev wrote: Capture random result to hidden question and control survey entry using quota on this question...

What is your workaround of capturing the random result and make it accessible to the quota system?
This area is still very unstable in LimeSurvey since equations questions cannot be access directly via the quota system.

jelo wrote: This area is still very unstable in LimeSurvey since equations questions cannot be access directly via the quota system.

Using some hidden question are not really unstable. Difficult but not unstable.

Denis