I am having trouble understanding the "evenly present elements" option.I am designing a survey with 3 conditions and I'd like to randomize the participants into those conditions. Currently I have set up a randomizer with 3 embedded data elements which assigns one of three values (1,2 or 3) to the variable "CONDITION". I set the number of elements presented to a participant to 1.So far so good. But should I check the "evenly present elements" option? If what condition one is assigned to is randomized, i.e. there is a 33.3% chance in my case, then in the end there will be roughly the same amount of participants in each condition, without having to execute any feature that "evenly presents" the options, right? If I throw a coin 100 times, it's gonna be about 50 times heads and 50 times tails.So what is this feature good for?

https://www.qualtrics.com/community/discussion/comment/31170#Comment_31170Yes, you should use it. It will ensure that respondents are randomly assigned to your three conditions evenly instead of just randomly. It will reduce the variability in how many respondents are assigned to each condition. It reduces the need to over sample and makes statistical analysis better since you are less likely to run into issues of small sample sizes if you cut the data by other criteria.It does not guarantee that you will have equal numbers of completes because people could abandon the survey after being assigned but before completing, but it improves the odds.

On average, yes. But it might come up heads 98 times. This feature helps guard against the unlikely, which becomes less important as the number of responses goes up.

Isn't "randomly present elements" unnecessary for high enough numbers of participants?

Isn't "randomly present elements" unnecessary for high enough numbers of participants? | Experience Community

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