Hi Everyone,

the ask is Select 2 products out of 4 using random sampling with probability proportional to its size (weighted randomization). Respondents get asked how frequent they use each product . based on their answers, weights should be assigned for each product: 10 for the lowest frequency of uses, 5 for weekly users, and 1 for daily users. 0 for respondents ineligible for a loop assignment (don’t use product, should be excluded from randomization)

To make sure enough respondents are assigned to priority categories, the randomization of categories will give infrequent users 10 times the probability of daily users. For example, a respondent will be more likely to be assigned to the Product1 loop if they use Product1 “less than monthly” and the other three products “Daily”

Any help is greatly appreciated!

Thanks