I would like to edit counts on the randomizer to correct for any unequal distributions as a consequence of participants not fully completing the survey. Details of how to do this are here:
https://www.qualtrics.com/support/survey-platform/survey-module/survey-flow/standard-elements/randomizer/#EditingCounts
However, I am not clear from these instructions exactly how to make it work. Let's say we have four conditions and need 100 participants, 25 in each condition. That is, we have 4 elements and want to present 1 of these 4 elements to each participant, such that each element is seen by an equal number of participants. We look at the element counts some time during data collection and see that the numbers are unequal because some people assigned to Conditions 2 and 3 ended the survey early:
Cond. 1: 11
Cond 2: 8
Cond 3: 3
Cond 4: 11
What are the calculations involved in deciding what changes to make to the counts for elements Condition 2 and Condition 4 so that they 'catch up' and we end up with 25 participants in each condition?
Many thanks in advance.
Best answer by TomG
View original