Hi, Anna,

therefore it is important to send lss exports.
Here the survey settings are included.

If we only import a question or a group our settings are taken, and we may talk for years without finding the issue.

Joffm

Hi Tony,
I am trying to do the same, however, it says "undefined variable" for 'randnumber'. Where EXACTLY do I put this code: "if(is_empty(randnumber.NAOK), rand(1, 100), randnumber.NAOK)" ?
I am sure this is a dumb question but I have no experience at all in this kind of stuff..
You would help me a lot with an answer.
Thanks.

"if(is_empty(randnumber.NAOK), rand(1, 100), randnumber.NAOK)" ?

This you put into the question text of a question of type "equation" with question code "randnumber"?

But WITH curly brackets around
{if(is_empty(randnumber.NAOK), rand(1, 100), randnumber.NAOK)}

Joffm

Thanks a lot. That worked!!

Hello everyone,
Can I apply the same method you suggested to Ellaisa when the groups of questions to randomize are more than 2 (they exactly are 15)? I image I can define specific ranges of values for each group (eg. r1<101; r1>100 and r1<201; r1>200 and r1<301; etc.)Is it right? Have I correctly written?
Thanks!
Anna

Hm,
to clarify:
WHAT do you want to do?
1. Display your 15 groups in random order?
Buzzword: randomization group name; each of the 15 groups gets the same "randomozation group name".

2. Display randomly one out of the 15 groups?
Create a random number and assign in "relevance equation" to the groups.
And it's up to you, how you do this.
Either a random number (1-15) and
group1 : randnum==1
group2 : randnum==2
group3 : randnum=
...

or a random number (1-1500) and
group1 : randnum le 100
group2 : randnum gt 100 and randnum le 200
group3 : randnum gt 200 and randnum le 300
...

Joffm

Thanks!
I would like to show 1 out of 15 questions' groups and be sure to collect answers from at least 100 respondents for each group.
So I think that your third solution fits well with my goal. And when I achieve it, I can apply the 'classic' approach (your second solution).
Is it right?

I hope you understood, why there is the solution with the range instead of just 1-15.

If you create a random number from 1-15, you can only deselect groups with enough participants.
Lets say, there are already 105 participants in group 8, but only 87 in group 3.
So you will change the relevance equation of group 8 to "randnum==0" (what is iimpossible) and the relevance equation of group 3 to "randnum= OR randnum==8" that you get more participants to group 3.

And with the ranges you have the option to fine tune.
If you see that the distribution is a bit unequal, you can change to
group 1: randnum lt 90
group 2: randnum ge 90 and randnum lt 210
group 3: randnum ge 210 and randnum lt 305
...
This way you can adapt the probability of the groups during fieldwork.

Joffm

But if you expect at least 100 participants per group a random number 1-15 will work fine.

Thanks, now it is clearer.